Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
quang hang » quang hoang, quang khang, quang thang
hieu manh » chieu xanh, dieu hanh, hien hanh
thanh tra » thanh toan, thanh hoa
tra quang » tran quang, tra quan, tri quang
hang cong » dang cong, hang nong, bang cong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (hieu nganh)) - thanh tra quang hang cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - thanh tra quang hang cong tan van ban*.