Perhaps you should try some spelling variations:
trinh quang » tinh quang, tranh quang, trinh dung
chieu sang » chieu sach, chieu xanh, hieu lang
trinh quan » tinh quang, trinh luat, trinh han
doi chieu » doc hieu, doi chi, ho chieu
dang cong » dung cong
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 quang) or (trinh quan)) dang cong ((dan than) OR (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh ((trinh quang) OR (trinh quan)) dang cong ((dan than) OR (van than)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh ((trinh quang) or (trinh quan)) dang cong ((dan than) OR (van than)) cau*".