'Searched' in the Bible

Lo this, we have searched it, so it is; Hear it, and know thou it for thy good.

For inquire, I pray thee, of the former age, And apply thyself to that which their fathers have searched out:

Then did he see it, and declare it; He established it, yea, and searched it out.

I was a father to the needy: And the cause of him that I knew not I searched out.

Behold, I waited for your words, I listened for your reasonings, Whilst ye searched out what to say.