Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trong hach » trong mach, trong cach, trong hanh
doi chieu » doc hieu, doi chi, ho chieu
tuong cua » truong cua, thong cua, luong cua
huong cua » dung cua
hach toan » thanh toan, manh toan
toan cau » toan cao, toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh ((tuong cua) OR (huong cua)) dung trong hach toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((tuong cua) OR (huong cua)) dung trong hach toan cau*.