Go + for + noun

Go + to + place

Expressions with "matter"

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What’s the matter?	What’s wrong? What´s the problem?
As a matter of fact	To tell the truth/ in reality.
That’s another matter	Something is completely different.
It is a matter of time	This consequence is inevitable though it may not happen immediately.
To make matters worse	To make a situation even more difficult.
No matter who/what/where	It’s not a problem who/what/where something happens.

source: https://www.facebook.com/a.learnenglish/posts/579670542055190

How to use "good thinking"

This expression is "used for telling someone that they have had a good idea". (Macmillan Dictionary)

Thus, instead of saying "good idea", you might use "good thinking", as well as Robin used to do in the 60s. 

"Good thinking, Batman!!"

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