Perhaps you should try some spelling variations:
cong hoang » cong hoan, thong hoang, vuong hoang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hoang van » hang va
doc hieu » toc thieu, hoc thieu, hoc hien
van quan » van ban
quan cau » quang cao, toan cau, quan ha
doi chi » doi khi

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) or (doc hieu)) xanh - hanh tranh cua cong hoang van quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (doc hieu)) xanh - hanh tranh cua cong hoang van quan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (doc hieu)) xanh - hanh tranh cua cong hoang van quan cau*.