find out - to discover. I found out that Japanese culture is a really interesting culture.
look for - to search. I am looking for Miranda, where is she?
talk over - to discuss. We had talked over the problem but didn't found any solution.
Why are you interested in phrasal verbs? Are you immersed in an English speaking Environment?
Experienced native English speakers endeavor don't use phrasal verbs in business conversations or in conversations with foreigners. It is enough to know a few most used.