Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu 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 cac, phan lap, toan cau
phan dau » hang dau

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 tieu tinh - canh tranh qua dung cong san ((phan cau) OR (((phan dau) OR (phan tu))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - canh tranh qua dung cong san ((phan cau) or (((phan dau) OR (phan tu))))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - canh tranh qua dung cong san ((phan cau) or (((phan dau) OR (phan tu))))*.