struggle for (something)
To have difficulty or put forth a strenuous effort to achieve, obtain, devise, or produce something. I struggled for words when they presented me the award. I used to be able to crank out a new book every year, but lately I've been struggling for ideas.
struggle for something
to strive to obtain something. I was struggling for a law degree when I won the lottery. I had to struggle for everything that came my way.