Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh quan, trinh luan
thong dan » thong van, tuong dan, thong den
tung dan » dung dan, huong dan, trung dai
toan cau » toan cao, toan ban, toan tap

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 cua) OR (trinh luat)) phuong ((thong dan) OR (tung dan)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((trinh cua) OR (trinh luat)) phuong ((thong dan) or (tung dan)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((trinh cua) OR (trinh luat)) phuong ((thong dan) or (tung dan)) toan cau*.