Why Texstudio cannot show more mistakes

I am using LanguageTool(TL) with Texstudio. I found that my Texstudio has connected the LT tool but it shows less grammar mistakes than using the LT itself. So, what chould I do?Thanks for your help so much. I have attached some pictures for more information.

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If “gasoline” already has an underline, the underline in “Unlike the gasoline” will probably be skipped by TeXstudio, to avoid showing double underlines. About the other cases: this is probably something that the TeXstudio developers can better help with.