Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
tranh cua » manh cua
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
30 trieu » 25 trieu
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: 30 trieu tinh - canh ((tranh cua) or (doanh cua)) ((nhung cong) OR (hang cong)) san phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - canh ((tranh cua) OR (doanh cua)) ((nhung cong) OR (hang cong)) san phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "30 trieu tinh - canh ((tranh cua) or (doanh cua)) ((nhung cong) OR (hang cong)) san phan dau".
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - canh ((tranh cua) or (doanh cua)) ((nhung cong) OR (hang cong)) san phan dau*.