Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » thong cong, hang cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh tranh va ((nhung cong) OR (dung cong)) dan ((phan cau) OR (phan cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh tranh va ((nhung cong) OR (dung cong)) dan ((phan cau) or (phan cac))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh tranh va ((nhung cong) OR (dung cong)) dan ((phan cau) or (phan cac))*.