Perhaps you should try some spelling variations:
chieu nganh » chieu xanh, chuyen nganh, nghiep nganh
hieu nganh » vien nganh, hiem ngan, hieu manh
canh trinh » canh tranh, hanh trinh, canh tinh
dung cong » dung trong
trinh su » trinh tu, trinh san, trinh cau
cong dan » cong san, cong tan, huong dan
than cap » khan cap, thanh lap, thanh cac
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: doc ((hieu nganh) or (chieu nganh)) - canh trinh su dung cong dan ((than cap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (chieu nganh)) - canh trinh su dung cong dan ((than cap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (chieu nganh)) - canh trinh su dung cong dan ((than cap) or (phan dau))*.