Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
chat luc » chat xuc, chat lua, nhan luc
van chat » cao chat
va triet » va thiet, va trien, ve triet
mai hoi » mai khoi, dai hoi, lai hoi
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, ma hoa, me hoi

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 y nang ((ma hoi) or (mai hoi)). thien van chat luc ((va thanh) or (ban thanh)) mai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoi) OR (mai hoi)). thien van chat luc ((va thanh) OR (ban thanh)) mai va triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) or (mai hoi)). thien van chat luc ((va thanh) or (ban thanh)) mai va triet*.