Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trang vat » trang vai, tang vat, trang mat
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » tran van, hang va
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - canh ((trang vat) or (trang va)) dung cong tac phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - canh ((trang vat) OR (trang va)) dung cong tac phan tu.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - canh ((trang vat) or (trang va)) dung cong tac phan tu*.