Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va
va dinh » van dinh, va kinh, va tinh
di cua » dai cua, doi cua, de cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 hoi. ((hieu ve) OR (hieu van)) cham tuc ((va hanh) or (va dinh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. ((hieu ve) OR (hieu van)) cham tuc ((va hanh) OR (va dinh)) di cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x hoi. ((hieu ve) OR (hieu van)) cham tuc ((va hanh) or (va dinh)) di cua te*".