Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh
bien tinh » bi tinh, yen tinh, diep tinh
tranh qua » tranh cua, thanh qua, trinh qua
song cong » cong cong, tong cong, song hong
cong san » cong tac
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (bien tinh)) - canh tranh qua song cong san ((phan cau) OR (phan cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((lieu tinh) OR (bien tinh)) - canh tranh qua song cong san ((phan cau) or (phan cac))~".
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) OR (bien tinh)) - canh tranh qua song cong san ((phan cau) or (phan cac))*.