Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
qua dung » quang dung, su dung, qua cong
cong san » cong tac
phan van » pham van, thanh van, luan van
phan dau » phan tu, hang dau

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 - doanh doanh ((qua dung) or (qua song)) cong san ((phan van) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - doanh doanh ((qua dung) OR (qua song)) cong san ((phan van) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - doanh doanh ((qua dung) or (qua song)) cong san ((phan van) or (phan dau))*.