Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
lai roi » loi roi
lai hoi » dai hoi, lai hoa, mai hoi
hieu va » hieu qua
xuc va » duc va, tuc va, luc va

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 ((lai hoi) OR (lai roi)). ((hieu va) or (lieu va)) cam xuc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((lai hoi) OR (lai roi)). ((hieu va) OR (lieu va)) cam xuc va hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((lai hoi) OR (lai roi)). ((hieu va) or (lieu va)) cam xuc va hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((lai hoi) OR (lai roi)). ((hieu va) or (lieu va)) cam xuc va hanh vai cua triet*.