Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
van thanh » ban thanh, van tuan
vap dung » ap dung, va dung, vat dung
van dung » van dong, xay dung, tin dung
ban toan » bai toan, ban than, van 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 xanh - thanh trung ((vap dung) OR (van dung)) trong ((ban toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung ((vap dung) OR (van dung)) trong ((ban toan) OR (van thanh)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh trung ((vap dung) OR (van dung)) trong ((ban toan) or (van thanh)) cau*".