Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh thong » anh thong, hanh trong, hang thong
quang dung » quang trung, ung dung, cuong dung
quan dung » quan duong, qua dung, quan dong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 - hanh thong ((quan dung) or (quang dung)) cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh thong ((quan dung) OR (quang dung)) cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh thong ((quan dung) or (quang dung)) cong dan than cao*.