Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hieu xanh » chieu xanh, hieu manh, dieu hanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh
hanh tap » han tap, hanh tai, hang tap

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 xanh) or (hieu nganh)) - canh tranh cua dung cong dan hanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu nganh)) - canh tranh cua dung cong dan hanh tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu nganh)) - canh tranh cua dung cong dan hanh tap*.