Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc hieu » hoc thieu, hoc hien, doc hieu
tinh van » trinh van, dinh van, tinh va

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 trinh luat ((nhung cong) or (thong cong)) tinh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh trinh luat ((nhung cong) OR (thong cong)) tinh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh trinh luat ((nhung cong) or (thong cong)) tinh van ban*.