Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh nhan » thanh phan, thanh san, thanh toan
nhan dang » nhan dan, phan dang, tran dang
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
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 ((dieu hanh) or (hieu nganh)) - danh thanh nhan dang cong dan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (hieu nganh)) - danh thanh nhan dang cong dan ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (hieu nganh)) - danh thanh nhan dang cong dan ((toan ban) or (toan tap))*.