Perhaps you should try some spelling variations:
doanh luan » doanh nhan
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
cong dan » cong san, cong tan, huong dan
phan dau » hang dau
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - canh ((tranh cua) or (doanh luan)) tong cong dan ((phan dau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - canh ((tranh cua) OR (doanh luan)) tong cong dan ((phan dau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - canh ((tranh cua) or (doanh luan)) tong cong dan ((phan dau) or (phan tu))*.