Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
chi xanh » chi anh, chi danh, chi hanh
tranh va » tranh van, trang va, trinh va
dan toan » van toan, dan than, manh toan
doi chi » doi khi
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - canh tranh va ((nhung cong) OR (hang cong)) ((dan toan) or (van tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tranh va ((nhung cong) OR (hang cong)) ((dan toan) OR (van tan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - canh tranh va ((nhung cong) OR (hang cong)) ((dan toan) or (van tan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh tranh va ((nhung cong) OR (hang cong)) ((dan toan) or (van tan)) cau*.