Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat
ban than » ban thanh, van thanh, ban hang

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 - canh tranh cua bang cong ((dan toan) or (((dan chan) or (ban than)))) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh tranh cua bang cong ((dan toan) OR (((dan chan) OR (ban than)))) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh tranh cua bang cong ((dan toan) or (((dan chan) or (ban than)))) cao*.