Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
manh trong » manh truong, manh trung, manh tuong
trong mach » trong cac, trong minh, trong anh
hoc chieu » hoc thieu, ho chieu, hoc hien
anh trong » anh thuong, dinh trong, lang trong
mach toan » manh toan, hach toan, mach tuan
vat dung » van dung, va dung, viet dung
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: hoc chieu xanh - ((manh trong) OR (anh trong)) vat dung trong mach toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - ((manh trong) or (anh trong)) vat dung trong mach toan cau*.