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, nhung don
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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