Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
lieu tinh » trieu tinh, diep tinh, bien tinh
canh manh » lanh manh, canh tranh, cach mang
manh cua » doanh cua, ban cua
phan dau » phan tu, hang dau
co lieu » cot lieu, co hieu, so lieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - canh manh cua ((nhung cong) OR (thong cong)) doanh ((phan lap) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co lieu tinh - canh manh cua ((nhung cong) or (thong cong)) doanh ((phan lap) OR (phan dau))~".
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - canh manh cua ((nhung cong) or (thong cong)) doanh ((phan lap) OR (phan dau))*.