Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
bien tinh » bi tinh, yen tinh, diep tinh
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap
ho bien » pho bien, hoa bien, so bien

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

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