Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
truong cao » truong dai
truong dao » truong dai, truong bo
nhung cong » dung cong, thong cong, hang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
tac cong » tac chong, cac cong, tac dong
cong cau » cong cu, cong chuc, thong cau

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 nganh - hanh ((((truong cao) or (truong dao))) or (thong quan)) nhung cong tac cong cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh ((((truong cao) OR (truong dao))) OR (thong quan)) nhung cong tac cong cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh ((((truong cao) or (truong dao))) or (thong quan)) nhung cong tac cong cau*.