Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hoang manh » hoang minh, hoang anh, hoang xanh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh vat » trinh van, trinh luat, sinh vat
cong danh » cuong danh, cong dan, cong thanh
vat nang » van nang, va nang, vat mang
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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 hieu lang - canh trinh vat nang ((hoang manh) OR (cong danh)) ((toan tap) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh trinh vat nang ((hoang manh) or (cong danh)) ((toan tap) or (toan ban))*.