Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
trinh han » trinh quan
tinh cua » trinh cua, sinh cua, tinh chat
cong van » cong vang, song van, cong tan
cong san » cong tac
tuan cau » toan cau, quan cau, tuan cu

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 - hanh ((trinh han) OR (tinh cua)) dung ((cong van) OR (cong san)) tuan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((trinh han) or (tinh cua)) dung ((cong van) OR (cong san)) tuan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((trinh han) or (tinh cua)) dung ((cong van) OR (cong san)) tuan cau*.