Perhaps you should try some spelling variations:
quang cuong » quang phuong, tang cuong, quang dung
cuong cong » cong cong, luong cong, duong cong
ban quang » ban quan, van quang, dan quang
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
canh ban » can ban, canh dan, canh van
cong tan » cong tac, cong san, cong thanh
phan dau » phan tu
hang dau » hang va, hang tai

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) or (theo chu)) tinh - canh ban quang cuong cong tan ((phan dau) OR (hang dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chu)) tinh - canh ban quang cuong cong tan ((phan dau) OR (hang dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chu)) tinh - canh ban quang cuong cong tan ((phan dau) OR (hang dau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) tinh - canh ban quang cuong cong tan ((phan dau) OR (hang dau))*.