Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
sach tu » sach thu, cach tu, sach ty
nam xuc » cam xuc, nam xua, nam thuc
tu nang » tru nang, tu nong, tu nano
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
o hoi » co hoi, o hoc, o hai

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 tu nang ((o hoi) or (xa hoi)). hieu van ((nam xuc) or (am thuc)) ban thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tu nang ((o hoi) OR (xa hoi)). hieu van ((nam xuc) OR (am thuc)) ban thanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach tu nang ((o hoi) or (xa hoi)). hieu van ((nam xuc) or (am thuc)) ban thanh vai cua triet*.