Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
chi xanh » chi anh, chi danh, chi hanh
van toan » van tuan, van thanh, 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - hanh tranh cua ((hang cong) OR (dang cong)) ((van toan) OR (van tan)) cau~".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - hanh tranh cua ((hang cong) OR (dang cong)) ((van toan) OR (van tan)) cau*.