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

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 cau luc ((va thanh) or (ban thanh)) vi 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 cau luc ((va thanh) OR (ban thanh)) vi va triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) or (mai hoi)). thien van cau luc ((va thanh) or (ban thanh)) vi va triet*.