Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
hang dau » hang va, hang tai
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - canh tranh cua dung ((cong tan) OR (cong tac)) ((phan tu) or (hang dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - canh tranh cua dung ((cong tan) OR (cong tac)) ((phan tu) OR (hang dau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co lieu tinh - canh tranh cua dung ((cong tan) OR (cong tac)) ((phan tu) or (hang dau))*".