Perhaps you should try some spelling variations:
hien nganh » vien nganh, hien nhanh, hieu nganh
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
cua nhung » va nhung
tuong dan » huong dan, tung dan, truong dai
xuong dan » huong dan, xuong san, nguong dan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nganh - hanh doanh cua nhung ((tuong dan) OR (xuong dan)) ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nganh - hanh doanh cua nhung ((tuong dan) OR (xuong dan)) ((phan lap) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nganh - hanh doanh cua nhung ((tuong dan) OR (xuong dan)) ((phan lap) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien nganh - hanh doanh cua nhung ((tuong dan) OR (xuong dan)) ((phan lap) or (phan dau))*.