Perhaps you should try some spelling variations:
dung cong » dung trong
cua tinh » cua sinh, hoa tinh
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
ha tinh » may tinh
va tinh » may tinh
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((cua tinh) or (((ha tinh) or (va tinh)))) - canh tranh va dung cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cua tinh) OR (((ha tinh) OR (va tinh)))) - canh tranh va dung cong dan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((cua tinh) or (((ha tinh) or (va tinh)))) - canh tranh va dung cong dan phan cau*.