Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hien tinh » thien tinh, bien tinh, dien tinh
tranh vat » trinh vat, tranh va, tranh van
trong tan » trong quan, trong cac, trong ca
tan thanh » tran thanh, tang thanh, toan thanh
thanh hai » thanh phan, thanh hoa, thanh san
vat dung » van dung, va dung, viet dung

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tinh) OR (khien tinh)) - canh tranh vat dung trong tan thanh hai~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) OR (khien tinh)) - canh tranh vat dung trong tan thanh hai*.