Perhaps you should try some spelling variations:
thien van » thi van
van tham » van thanh, van tuan, van chat
tham luc » than luc, tham nuoc, tham thuc
dinh dau » dinh du, danh dau, dinh dao
dinh dat » dinh ket, dinh van, dinh lam
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
luc va » duc va, tuc va, loc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang cao hoi. thien van tham luc va ((dinh dau) or (dinh dat)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. thien van tham luc va ((dinh dau) OR (dinh dat)) va triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. thien van tham luc va ((dinh dau) or (dinh dat)) va triet*.