Expression: Try as I might, I could not convince her

[Tom]

Hi everybody

Please see below:

1-Try as I might, I could not convince her.

Is it correct? What sort of a sentence structure is that? Could you please give me a few more examples like this?

Tom

[Mister Micawber]

.
Correct.

Try as [much as] I might, I could not convince her.

I can't think of others with precisely the same elisions, but similar structures abound:

Think what you will, my brother is innocent.
Come what may, I will always be faithful to you, my darling.
Be that as it may, you have still not fulfilled your obligations.
.
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Native English teacher at Mister Micawber's