Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, chu quang
thanh tinh » thanh binh, nhanh tinh, than kinh
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
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 - thanh tinh cua nhung ((cong san) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu quang - thanh tinh cua nhung ((cong san) OR (cong tan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu quang - thanh tinh cua nhung ((cong san) or (cong tan)) toan cao*.