Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, chu quang
hanh dang » hanh dong, hanh dung, hanh mang
luan dung » lan dung, luan dong, luan hung
ho chieu » theo chieu, hoc thieu, doi chieu
anh dang » anh dong, anh dung, anh bang
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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 quang - ((hanh dang) or (anh dang)) luan dung ((cong dan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu quang - ((hanh dang) OR (anh dang)) luan dung ((cong dan) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu quang - ((hanh dang) or (anh dang)) luan dung ((cong dan) or (cong tac)) toan cau*.