Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trinh quan » tinh quang, trinh han
dang cong » dung cong
cong lang » cong vang, cong luong, cong quang
lang toan » dang toan, lang thang, lang thanh
toan ban » van ban

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