Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
trong manh » trong minh, trong anh, trong mach
cach dung » sach dung, cach mang, anh dung
luan dung » lan dung, luan dong, luan hung
manh toan » thanh toan, anh tuan, tinh toan
tac dung » sach dung, xay dung, tin dung
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) OR (chinh sach)) - ((cach dung) or (tac dung)) luan dung trong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - ((cach dung) OR (tac dung)) luan dung trong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chinh sach)) - ((cach dung) or (tac dung)) luan dung trong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chinh sach)) - ((cach dung) or (tac dung)) luan dung trong manh toan cau*.