Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tran » thanh trang, thanh toan, thanh tuan
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
thanh tra » thanh toan, thanh hoa
hang cong » dang cong, hang nong, bang cong
trinh han » trinh quan
han cau » hang cau, phan cau, van cau

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 tran) OR (thanh tra)) tuan ((nhung cong) or (hang cong)) trinh han cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((thanh tran) OR (thanh tra)) tuan ((nhung cong) OR (hang cong)) trinh han cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((thanh tran) OR (thanh tra)) tuan ((nhung cong) or (hang cong)) trinh han cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((thanh tran) OR (thanh tra)) tuan ((nhung cong) or (hang cong)) trinh han cau*.