Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doi chi, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
san toan » van toan, dan toan, xuan toan

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: ((doi chieu) OR (doc hieu)) xanh - hanh tranh cua cong cong ((san toan) OR (manh toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doc hieu)) xanh - hanh tranh cua cong cong ((san toan) OR (manh toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) xanh - hanh tranh cua cong cong ((san toan) OR (manh toan)) cao*.