Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien sach » dien sach, kien sach, thien hach
trung cao » truong cao, trung cap, trung co
cao dung » cao dang, cao dong, cao ung
cong tac » cong ty
phan cac » nhan cach, phan dau, phan lap
dan ap » dan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - thanh trung cao dung ((cong san) or (cong tac)) ((phan cac) or (dan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - thanh trung cao dung ((cong san) OR (cong tac)) ((phan cac) OR (dan ap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - thanh trung cao dung ((cong san) or (cong tac)) ((phan cac) or (dan ap))*.