Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
nhanh dong » hanh dong, nhanh chong, anh dong
thong cong » trong cong, tong cong, thong thong
cho thong » cho thuong, pho thong, cho trong
dong cho » dung cho, dong co, dong hoc
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chieu sang) or (chieu sach)) - nhanh dong cho thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chieu sang) OR (chieu sach)) - nhanh dong cho thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: chao ((chieu sang) or (chieu sach)) - nhanh dong cho thong cong tac toan cau*.