Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh dong » hanh dong, nhanh chong, anh dong
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
cho thong » cho thuong, pho thong, cho trong
dong cho » dung cho, dong co, dong hoc
cong san » cong tac
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: chao ((hieu lang) or (chieu xanh)) - nhanh dong cho thong cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((hieu lang) OR (chieu xanh)) - nhanh dong cho thong cong san van ban.
• Adding a wildcard symbol may retrieve word variants: chao ((hieu lang) or (chieu xanh)) - nhanh dong cho thong cong san van ban*.