Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
dai hoi » dai hoc, dai hai, dai moi
hieu vu » hieu va, hieu ve, hieu su
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
ky tang » ky nang, ky dang, kho tang
dan hoi » dan hoc, van hoi, dang khoi
cao tuc » dao tuc, cao duc, cao suc
tuc va » thuc va, truc va, tuc xa
vu cao » cu cao, va cao
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, tu can
cua te » cua tu

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

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