Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
su triet » su viet, su tien, ve triet
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
sach tu » sach thu, cach tu, sach ty
nam xuc » cam xuc, nam xua, nam duoc
tu nang » tru nang, tu nong, tu nano
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 (nam thuc)) va thanh lai su 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 (nam thuc)) va thanh lai su triet.
• Adding a wildcard symbol may retrieve word variants: su sach tu nang ((o hoi) or (xa hoi)). hieu van ((nam xuc) or (nam thuc)) va thanh lai su triet*.