Perhaps you should try some spelling variations:
cac treo » cac tro, cau treo, cac trieu
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
hai tuc » thai tuc, hai cuc, thai thuc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
su hoi » su choi, su hai, lu hoi
ma hoi » xa hoi, me hoi, va hoi
va hai » van hai, va chai, va khai
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su hoi ky nang ((((ma hoi) or (ma hoa))) or (mai hoi)). hieu va hai tuc va hanh va cac treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su hoi ky nang ((((ma hoi) OR (ma hoa))) OR (mai hoi)). hieu va hai tuc va hanh va cac treo.
• Adding a wildcard symbol may retrieve word variants: su hoi ky nang ((((ma hoi) or (ma hoa))) or (mai hoi)). hieu va hai tuc va hanh va cac treo*.