Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
chau tinh » ha tinh, cua tinh, cac tinh
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 ((chau tinh) OR (cuu tinh)) - canh trinh vat dung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chau tinh) or (cuu tinh)) - canh trinh vat dung cong dan ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (cuu tinh)) - canh trinh vat dung cong dan ((toan cau) OR (toan tap))*.