Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
trang va » tran van, hang va
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (hieu lang)) - canh ((trang va) or (trinh va)) thanh cong dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - canh ((trang va) OR (trinh va)) thanh cong dan can cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu lang)) - canh ((trang va) or (trinh va)) thanh cong dan can cau*.