Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
tuan phung » tuan hung, tuan phong, tran phuong
phung cong » nhung cong, phong cong, nhung chong
hoc thieu » toc thieu, hoc hien
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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