Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tung tuan » trung tuan, hung tuan, quang tuan
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
dan toan » van toan, dan than, manh toan

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 tach - thanh tung tuan ((hang cong) or (hang nong)) ((dan toan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh tung tuan ((hang cong) OR (hang nong)) ((dan toan) OR (anh tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh tung tuan ((hang cong) or (hang nong)) ((dan toan) or (anh tuan)) cau*.