Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhieu tang » chieu sang, hieu lang, nhiet nang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh quan » tinh quang, trinh luat, trinh han
quan hang » quan hoang, quan lang, quan hanh
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
chan ban » can ban, chat ban, chan doan
chan nan » chan nhan, chang nang, chan doan

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 (nhieu tang)) - canh trinh quan hang cong dan ((chan ban) OR (chan nan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (nhieu tang)) - canh trinh quan hang cong dan ((chan ban) OR (chan nan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (nhieu tang)) - canh trinh quan hang cong dan ((chan ban) OR (chan nan))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (nhieu tang)) - canh trinh quan hang cong dan ((chan ban) OR (chan nan))*.