Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
thanh hung » thanh huong, thanh tung, thanh trung
thanh toan » thanh hoa, thanh san, tinh toan
manh toan » anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - thanh hung ((cua tong) or (cua nong)) cong ((manh toan) or (thanh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - thanh hung ((cua tong) OR (cua nong)) cong ((manh toan) OR (thanh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - thanh hung ((cua tong) or (cua nong)) cong ((manh toan) or (thanh toan)) cao*.