Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
duc ban » duc tan, dua ban, duc man
duc van » duc va, duc tan, duc manh
lai cua » dai cua, hai cua, lai chau
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu van cham ((duc ban) or (duc van)) hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu van cham ((duc ban) OR (duc van)) hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu van cham ((duc ban) or (duc van)) hanh lai cua triet*.