Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
qua dung » quang dung, su dung, qua cong
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: doi chieu sang - hanh trinh ((qua dung) or (qua song)) cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh trinh ((qua dung) OR (qua song)) cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh trinh ((qua dung) or (qua song)) cong dan than cao*.