Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh
nhieu tang » nhiet nang
hieu lang » hieu quang, hieu van, biet lang
dung cong » dung trong
anh hang » anh hoang, anh hung, anh bang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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) or (nhieu tang)))) - anh hang va dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (((hieu lang) OR (nhieu tang)))) - anh hang va dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (((hieu lang) or (nhieu tang)))) - anh hang va dung cong tac toan cau*.