Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
canh manh » lanh manh, canh tranh, cach mang
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chieu sang)) - canh manh ((cua tong) OR (cua dong)) cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sang)) - canh manh ((cua tong) OR (cua dong)) cong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (chieu sang)) - canh manh ((cua tong) OR (cua dong)) cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chieu sang)) - canh manh ((cua tong) OR (cua dong)) cong dan van ban*.