Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
dong cong » duong cong, dung cong, dang cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
san chan » san chang, san chay, ban chan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh tranh cua dong cong ((san chan) or (dan chan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh tranh cua dong cong ((san chan) OR (dan chan)) tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua dong cong ((san chan) or (dan chan)) tap*.