New International Version (©1984)
then I saw all that God has done. No one can comprehend what goes on under the sun. Despite all his efforts to search it out, man cannot discover its meaning. Even if a wise man claims he knows, he cannot really comprehend it.New American Standard Bible (©1995)
and I saw every work of God, I concluded that man cannot discover the work which has been done under the sun. Even though man should seek laboriously, he will not discover; and though the wise man should say, "I know," he cannot discover. GOD'S WORD® Translation (©1995)
then I saw everything that God has done. No one is able to grasp the work that is done under the sun. However hard a person may search for it, he will not find [its meaning]. Even though a wise person claims to know, he is not able to grasp it. King James Bible
Then I beheld all the work of God, that a man cannot find out the work that is done under the sun: because though a man labour to seek it out, yet he shall not find it; yea farther; though a wise man think to know it, yet shall he not be able to find it. American King James Version
Then I beheld all the work of God, that a man cannot find out the work that is done under the sun: because though a man labor to seek it out, yet he shall not find it; yes farther; though a wise man think to know it, yet shall he not be able to find it. American Standard Version
then I beheld all the work of God, that man cannot find out the work that is done under the sun: because however much a man labor to seek it out, yet he shall not find it; yea moreover, though a wise man think to know it, yet shall he not be able to find it. Bible in Basic English
Then I saw all the work of God, and that man may not get knowledge of the work which is done under the sun; because, if a man gives hard work to the search he will not get knowledge, and even if the wise man seems to be coming to the end of his search, still he will be without knowledge. Douay-Rheims Bible
And I understood that man can find no reason of all those works of God that are done under the sun: and the more he shall labour to seek, so much the less shall he find: yea, though the wise man shall say, that he knoweth it, he shall not be able to find it. Darby Bible Translation
then I saw that all is the work of God, and that man cannot find out the work that is done under the sun: because however man may labour to seek it out, yet doth he not find it; and even, if a wise man think to know it, he shall not be able to find it out. English Revised Version
then I beheld all the work of God, that man cannot find out the work that is done under the sun: because however much a man labour to seek it out, yet he shall not find it; yea moreover, though a wise man think to know it, yet shall he not be able to find it. Webster's Bible Translation
Then I beheld all the work of God, that a man cannot find out the work that is done under the sun: because though a man may labor to seek it out, yet he shall not find it; yes further; though a wise man thinketh to know it, yet shall he not be able to find it. World English Bible
then I saw all the work of God, that man can't find out the work that is done under the sun, because however much a man labors to seek it out, yet he won't find it. Yes even though a wise man thinks he can comprehend it, he won't be able to find it. Young's Literal Translation
then I considered all the work of God, that man is not able to find out the work that hath been done under the sun, because though man labour to seek, yet he doth not find; and even though the wise man speak of knowing he is not able to find. | 
