Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
cong quang » luong quang, thong quang, duong quang
doi chieu » doc hieu, doi chi, ho chieu
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong van » cong vang, cong san, song van
tuan thu » toan thuc, van thu

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