Perhaps you should try some spelling variations:
nhieu tang » nhiet nang
chieu sang » chieu sach, chieu xanh
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, hieu van, biet lang
canh manh » lanh manh, canh tranh, cach mang
cong san » cong tac
manh va » hanh va, anh va, minh va
san van » tan van, luan van, tran 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 (((nhieu tang) OR (chieu sang)))) - canh manh va nhung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (((nhieu tang) OR (chieu sang)))) - canh manh va nhung cong san van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (((nhieu tang) OR (chieu sang)))) - canh manh va nhung cong san van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (((nhieu tang) OR (chieu sang)))) - canh manh va nhung cong san van ban*.