Hi, please help me by correcting my entry, thanks a lot!)

Can you think of anyone who matches that description?

2. I can think of someone that match that description.

I can think of someone who matches that description.

3. I cant think of how he looks like.

I can't remember what he looks like.
4. I dont remember how he looks like.

I don't remember what he looks like.

She came in the bar look for her boyfriend.

She came into the bar to look for her boyfriend.

She asked bartender if he saw him, she described him, but bartender cant think of anybody that match that description.

She asked the bartender if had seen him, then she described him, but the bartender couldn't think of anyone who matched that description.

But than he remembered him, because he remember peopel by what they order.

But then he remembered him, because he remembered people by what they ordered.

He ordered two portions of pork chops, one for him and one for girl.

The guy put in two orders for pork chops, one for himself and one for the girl.

She thought really is he seeing someone else?  

This depends: are you sure or is there doubt? In the corrections below, if she's pretty sure it is true, I would not use a question mark.  If there is a doubt that she is thinking, I'd put that into quotes to show she is thinking about it, and then you would need to use the question mark.

She thought,  "He really is seeing someone else."  OR She thought, "Is he really seeing someone else?"

Hi, please help me by correcting my entry, thanks a lot!)

She came in the bar lookING for her boyfriend. She asked THE bartender if he saw him, she described him, but THE bartender cant think of anybody that matchES that description. But than he remembered him, because he rememberS peopLE by what they order. He ordered two portions of pork chops, one for him and one for A girl. She thought really is he REALLY seeing someone else?