Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam tu
hanh vai » hanh vi, hanh va, hanh tai
cua viet » ca viet, hoa viet, cua vat
hieu ve » hieu va
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x ho. ((hieu ve) or (hieu van)) ((nam thuc) OR (nam thu)) xa hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x ho. ((hieu ve) OR (hieu van)) ((nam thuc) OR (nam thu)) xa hanh vai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x ho. ((hieu ve) or (hieu van)) ((nam thuc) OR (nam thu)) xa hanh vai cua viet".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. ((hieu ve) or (hieu van)) ((nam thuc) OR (nam thu)) xa hanh vai cua viet*.