Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thien hach » thien thanh, hien hanh
thanh tung » thanh cong
nang cong » nang song, dang cong, bang cong
tan phong » tran phong, tuan phong, van phong
cong tan » cong tac, cong san, cong thanh
tung va » trung va, tuong va, dung va
va nang » van nang, da nang, cam nang
cach » cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (thien hach)) - thanh tung va nang cong tan phong cach~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (thien hach)) - thanh tung va nang cong tan phong cach.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (thien hach)) - thanh tung va nang cong tan phong cach*.