Perhaps you should try some spelling variations:
hai chau » lai chau, ha chau, hat chau
sach ky » sac ky, sach y, sach ty
hai hau » dai hau, hai hai, lai chau
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
xuc va » duc va, tuc va, luc va
co hoi » co hoc, co loi
o hoi » o hoc, o hai, o hoa

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

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