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Can you tell me what part of the book didn't particularly read well in so much that you had to throw it away in a trash can?
Can you tell me what part of the book didn't particularly read well that you had to throw it away in a trash can?
Can you tell me what part of the book didn't particularly read well so much that you had to throw it away into a trash can
Can you tell me what part of the book didn't particularly read well, so much so that you had to throw it away into a trash can?

Hi,

Could anyone verify the correctness of these sentences I wrote?

Which ones are usable and which ones aren't?

Thanks
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The problem with all of your attempts is that "didn't particularly read well" is a very mild criticism, which does not coordinate with having to throw the book away. Also, usually you would say either "throw it away" or "throw it into a trash can" -- you don't need both modifiers.

I would suggest:

Can you tell me what part of the book was so bad that you had to throw it away/throw it into the trash?
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I hope you have a great day for taking the trouble to help me.