Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cao tuc » dao tuc, cao duc, cao suc
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » hieu qua
tu san » thu san, tu ban, tu can
tuc va » thuc va, truc va, tuc xa
cua te » cua tu
san ky » sang ky, van ky, dan ky
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang ((ma hoi) OR (mai hoi)). ((hieu va) or (lieu va)) cao tuc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((ma hoi) OR (mai hoi)). ((hieu va) OR (lieu va)) cao tuc va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang ((ma hoi) OR (mai hoi)). ((hieu va) or (lieu va)) cao tuc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((ma hoi) OR (mai hoi)). ((hieu va) or (lieu va)) cao tuc va hanh vai cua te*.