Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
cau phuc » cau truc, chau phu, huu phuc
phuc van » thuc van, phuc va, chuc van
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
ly nang » ly hang, ly vang, ly quang
van cau » van dau, van hau, van chat
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ly nang) or (ky nang)) xa hoi. hieu van cau phuc van hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly nang) OR (ky nang)) xa hoi. hieu van cau phuc van hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ly nang) or (ky nang)) xa hoi. hieu van cau phuc van hanh vai cua triet*.