Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
bo sach » co sach, hoc sach
van cac » van hac, van cau, van bac
lai cua » dai cua, hai cua, lai chau
xuc va » tuc va, luc va, xac va
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) or (bo sach)) ky nang x hoi. thien van cac ((xuc va) or (duc va)) hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (bo sach)) ky nang x hoi. thien van cac ((xuc va) OR (duc va)) hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (bo sach)) ky nang x hoi. thien van cac ((xuc va) or (duc va)) hanh lai cua triet*.