Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh ki » hanh vi, hanh ky, hanh kien
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
thu va » thuc va, thue va, tu va
ca thu » cac thu, cam thu, ca tru
tu san » thu san, tu can, vu san
tu ban » thu ban, te ban
x hoi » xa hoi, o hoi, x ho
ki su » ky su

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) or (tu ban)) ky nang x hoi. ((hieu ve) or (hieu qua)) ca thu va hanh ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky nang x hoi. ((hieu ve) OR (hieu qua)) ca thu va hanh ki su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu ban)) ky nang x hoi. ((hieu ve) or (hieu qua)) ca thu va hanh ki su triet*.