Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
luong tai » dung tai, luong va
hoc hieu » hoc thieu, hoc hien, doc hieu
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty

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 tang cua nhung ((luong tai) or (cong tac)) dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh tang cua nhung ((luong tai) OR (cong tac)) dan ca.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh tang cua nhung ((luong tai) or (cong tac)) dan ca*.