Perhaps you should try some spelling variations:
lieu tinh » diep tinh, bien tinh
tranh qua » tranh cua, thanh qua, trinh qua
dung cong » dung trong
qua dung » quang dung, su dung, qua song
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 (trieu tinh)) - canh tranh qua dung cong san ((phan cau) OR (phan cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((lieu tinh) OR (trieu tinh)) - canh tranh qua dung cong san ((phan cau) or (phan cac))~".
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) OR (trieu tinh)) - canh tranh qua dung cong san ((phan cau) or (phan cac))*.