Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
truong ca » truong cao, truong va, trong ca
dan than » dan chan, van than, dan toan
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: toc thieu sach - manh ((trung cua) or (truong ca)) nhung cong ((dan than) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - manh ((trung cua) OR (truong ca)) nhung cong ((dan than) OR (ban than)) cau.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - manh ((trung cua) or (truong ca)) nhung cong ((dan than) or (ban than)) cau*.