What is the usage of "in this regard", I didn't find good examples or definition to get its usage. When is it used? What is its difference with "in this respect" or any "in this X" that I don't know.
The following sentences are some examples showing how I think about them and use them:
Some students may have auditory problem; in this regard, teachers should get sure a student hear the words correctly.
The internet speed is low in this country; in this respect, it is one of the worst countries to use internet.
In my opinion, the teacher treated the student badly; in this regard, I prefer to not speak more.
There is a shortage of skilled labor in this city. Decision makers should do something in this regard.
I can't understand the Einstein theories. In this regard my knowledge is incomplete.
He runs very fast. In this respect he is one of the fastest boys I have ever seen.
Is my sense of them correct?