Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
tran thanh » ban thanh, van thanh, quan thanh
hoc thieu » toc thieu, hoc hien
cong tac » cong ty
tran tap » toan tap, tran tan, tran tuan
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - thanh tung va nhung cong tac ((tran tap) or (tran thanh))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung va nhung cong tac ((tran tap) OR (tran thanh)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung va nhung cong tac ((tran tap) or (tran thanh))*.