Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
cau phuc » cau truc, chau phu, huu phuc
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
ty nang » ky nang, ty hang, ly nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty xang)) xa hoi. ((hieu ve) OR (hieu va)) cau phuc va hanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ty xang)) xa hoi. ((hieu ve) or (hieu va)) cau phuc va hanh vai cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ty xang)) xa hoi. ((hieu ve) or (hieu va)) cau phuc va hanh vai cua triet*.