Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
va duong » van duong, va tuong, va dong
va huong » va thuong, va phuong, va tuong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap
ha dong » hoat dong, van dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - thanh trung ((((va duong) or (ha dong))) or (va huong)) cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh trung ((((va duong) OR (ha dong))) OR (va huong)) cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh trung ((((va duong) or (ha dong))) or (va huong)) cong san toan cao*.