Perhaps you should try some spelling variations:
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap
ma cua » ca cua, manh cua, mang cua
a cua » ca cua, a chua, ap cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((a cua) or (ma cua)) tinh - canh tranh ((cua dung) OR (cua dong)) cong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((a cua) OR (ma cua)) tinh - canh tranh ((cua dung) OR (cua dong)) cong dan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((a cua) or (ma cua)) tinh - canh tranh ((cua dung) OR (cua dong)) cong dan phan cac".
• Adding a wildcard symbol may retrieve word variants: ((a cua) or (ma cua)) tinh - canh tranh ((cua dung) OR (cua dong)) cong dan phan cac*.