Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cham tuc » nham thuc, pham thuc, tham thuc
nang xa » nang x, lang xa, nang ma
te sach » toc sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va dang » van dang, va nang, da dang
va lang » va nang, hoa lang
hai cua » thai cua, dai cua, hoi cua
tu cach » tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky nang xa hoi. hieu va cham tuc ((va dang) OR (va lang)) hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky nang xa hoi. hieu va cham tuc ((va dang) OR (va lang)) hai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) ky nang xa hoi. hieu va cham tuc ((va dang) OR (va lang)) hai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xa hoi. hieu va cham tuc ((va dang) OR (va lang)) hai cua viet*.