does bi-wring make any difference in sound quility if I connect the other end on the same receiver terminal??

only in the case where a single wire is not of sufficient guage (i.e. too thin) to carry the full signal. Biwiring does not provide any advantage over a single, thicker wire.

No and neither does bi-wiring! Lots of posts on the bi-wiring subject. Try a search for bi-wire or biwire.

Nothing against you S002, but I find it interesting why so many people ask about this topic. Why don't people just hook up some good 12-14 gauge wire and enjoy.

They ask because they don't know.