Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
cua truong » cua trung, xuan truong, cac truong
cua thong » cua thuong, cua khong, cua tong
cong ban » cong bang, cong san, cong tan
ban khan » ban than, ban nhan, ban chan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - thanh tung ((cua thong) or (cua truong)) cong ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh tung ((cua thong) OR (cua truong)) cong ban khan cap.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - thanh tung ((cua thong) or (cua truong)) cong ban khan cap*.