Looking on the internet deeply has found these results:

such thing is the most popular phrase on the web.

such a thing 12,130,000 results on the web	such thing 138,500,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
such a thing. star. see definition of such a thing. Font size. X. Aa. Aa. Aa. Aa. Aa. show. all, pronoun. as in such. prev next. aforesaid�... Aug 15, 2011 ... View all 4 replies Loading... Hide replies. jackbauer555 5 months ago � +name. exe is such a thing even possible..... :) :) Yes it is!?. Read more�... (I) never heard of such a thing! an expression of amazement and disbelief. ( Compare this with Well, I never!) Bill: The company sent out a representative the �... ... �there's no such thing as bad publicity,� but in phrases like this it's much less common to insert an �a� after �such� so that the phrase becomes �no such a thing. �.	I never received any such thing. I don't believe there's any such thing. I'm not prepared to accept any such thing. No. It doesn't mean any such thing. I don't believe there's any such thing. I didn't say any such thing. You didn't do any such thing.

such a thing

12,130,000 results on the web

such thing

138,500,000 results on the web

More popular!

such a thing. star. see definition of such a thing. Font size. X. Aa. Aa. Aa. Aa. Aa. show. all, pronoun. as in such. prev next. aforesaid�...
Aug 15, 2011 ... View all 4 replies Loading... Hide replies. jackbauer555 5 months ago � +name. exe is such a thing even possible..... :) :) Yes it is!?. Read more�...
(I) never heard of such a thing! an expression of amazement and disbelief. ( Compare this with Well, I never!) Bill: The company sent out a representative the �...
... �there's no such thing as bad publicity,� but in phrases like this it's much less common to insert an �a� after �such� so that the phrase becomes �no such a thing. �.