Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
van nhuong » van chuong, van phuong, van huong
hanh tram » hanh trang, thanh tran, thanh tra
van nhung » va nhung, van hung, van phung
doc hieu » toc thieu, hoc thieu, hoc hien
hanh tam » thanh tam, nhanh tam, hanh lam
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap

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: doc hieu nganh - ((hanh tram) OR (hanh tam)) ((van nhung) OR (van nhuong)) cong san than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu nganh - ((hanh tram) or (hanh tam)) ((van nhung) OR (van nhuong)) cong san than cao~".
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - ((hanh tram) or (hanh tam)) ((van nhung) OR (van nhuong)) cong san than cao*.