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