Perhaps you should try some spelling variations:
trinh dang » trinh dung, trinh dan, trinh bang
canh trinh » canh tranh, hanh trinh, canh tinh
dang bang » dong bang, dang dang, tang bang
bang cong » dang cong, bang song, hang cong
theo chu » theo chieu, cho chu, theo yeu
chao chu » cho chu, cua chu, cao cho
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: ((((theo chu) OR (chao chu))) OR (theo tieu)) sach - canh trinh dang bang cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((theo chu) OR (chao chu))) or (theo tieu)) sach - canh trinh dang bang cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((((theo chu) OR (chao chu))) or (theo tieu)) sach - canh trinh dang bang cong dan toan cau*.