Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
luat thong » luat thuong, suat thong, xuat thong
cuong tap » luong tap, cong tac, luong tai
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tap » cong tac, cong tan, tong tap
toan cao » toan tap
toan ban » van ban

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 thong ((cong tap) OR (cuong tap)) ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh trinh luat thong ((cong tap) OR (cuong tap)) ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu nganh - hanh trinh luat thong ((cong tap) OR (cuong tap)) ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh trinh luat thong ((cong tap) OR (cuong tap)) ((toan cao) or (toan ban))*.