Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
tranh va » tranh van, trang va, trinh va
va hang » van hang, va nang, va lang
tan ca » tan cua, tang ca, dan ca

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

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