This is another opportunity to examine both the Hebrew and Greek. There are two different Hebrew words here, baqash and darash both translated as "seek." There is a play on words here in the Greek contrasting the ideas of "out" and "in".
According to the Hebrew bible site, Mechon-Mamre, this literal version of this verse is:
"And ye shall seek Me, and find Me, when ye shall search for Me with all your heart."
וּבִקַּשְׁתֶּם אֹתִי, וּמְצָאתֶם: כִּי תִדְרְשֻׁנִי, בְּכָל-לְבַבְכֶם