Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
tac nhung » tay nhung, tham nhung, thai nhung
cong tacn » cong tan, cong san, cong dan
cong tac » cong ty
song van » hoang van, trong van, duong van
toan ban » van ban
phan cac » nhan cach, phan dau, phan 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 thieu sach - thanh cong tac nhung ((cong tacn) or (song van)) ((toan ban) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh cong tac nhung ((cong tacn) OR (song van)) ((toan ban) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh cong tac nhung ((cong tacn) or (song van)) ((toan ban) or (phan cac))*.