Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang doi » nang doc, nang noi, hang doi
tai lang » tai cong, thi lan, tai san
doi cua » dai cua, hoi cua
xa nang » da nang, va nang, xa nong
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ty lang » tay lang, ty xang, ty hang
cac tuc » cac toc, cac tac, cac nuoc
cac tu » cac thu, cach tu, cac du

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty lang) OR (tai lang)) xa hoi. hieu ve ((cac tuc) OR (cac tu)) xa nang doi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty lang) or (tai lang)) xa hoi. hieu ve ((cac tuc) OR (cac tu)) xa nang doi cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty lang) or (tai lang)) xa hoi. hieu ve ((cac tuc) OR (cac tu)) xa nang doi cua viet*.