Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chat tuc » chat xuc, luat tuc, chat huu
nang xay » dang xay, nganh xay, nang xuan
xa dang » xa dong, da dang, xo dang
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
te sach » toc sach
hai va » hai van, thai va, mai va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (te sach)) ky nang xay hoi. hieu ve chat tuc xa dang ((hai va) or (hoi va)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky nang xay hoi. hieu ve chat tuc xa dang ((hai va) OR (hoi va)) viet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky nang xay hoi. hieu ve chat tuc xa dang ((hai va) or (hoi va)) viet*.