Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tran van » luan van
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh tran van nhung cong ((dan toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tran van nhung cong ((dan toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tran van nhung cong ((dan toan) or (van toan)) cau*.