Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trong manh » trong minh, trong anh, trong mach
sach nang » cach mang, sach dung, sach danh
nang quan » ban quan, nang suat
quan dung » quang dung, quan duong, qua dung
manh toan » thanh toan, anh tuan, tinh toan
toan cau » toan cao, toan ban, toan tap
ha tinh » va tinh, may tinh

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: ho ((((chieu xanh) OR (chieu sach))) OR (ha tinh)) - sach nang quan dung trong manh toan cau~.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) or (chieu sach))) or (ha tinh)) - sach nang quan dung trong manh toan cau*.