Perhaps you should try some spelling variations:
duong quang » dung quang, luong quang, duong qua
chieu sang » chieu sach, chieu xanh, hieu lang
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh ve, trinh vi
cong van » cong vang, cong san, song van
tan cau » toan cau, van cau, tan ca

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 sang - canh ((trinh va) OR (trinh vat)) nhung ((cong van) or (duong quang)) tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - canh ((trinh va) OR (trinh vat)) nhung ((cong van) OR (duong quang)) tan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - canh ((trinh va) OR (trinh vat)) nhung ((cong van) or (duong quang)) tan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - canh ((trinh va) OR (trinh vat)) nhung ((cong van) or (duong quang)) tan cau*.