Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » hoc hien
canh tran » hanh trang, banh trang, lanh tranh
van nhung » van nhuong, va nhung, van hung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - ((canh tran) OR (canh tranh)) van nhung cong san toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) xanh - ((canh tran) OR (canh tranh)) van nhung cong san toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - ((canh tran) OR (canh tranh)) van nhung cong san toan tap*.