Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tranh luan » trinh luan, trinh luat, doanh luan
luan lang » luan nang, quan lang, lan lang
lang cong » dang cong, bang cong, hang cong
cong dan » cong san, cong tan, huong dan
chan tap » han tap, chan ta, toan tap
phan tap » phan lap, han tap, pha tap

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 sang) or (chieu sach)) - canh tranh luan lang cong dan ((chan tap) OR (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - canh tranh luan lang cong dan ((chan tap) OR (phan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - canh tranh luan lang cong dan ((chan tap) OR (phan tap))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - canh tranh luan lang cong dan ((chan tap) OR (phan tap))*.