Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh hoac » thanh hoach, thanh hoa, trinh hoa
hoac khong » hoa khong, hoc khong, hay khong
hoc tien » hoc tieng, hoc hien, hoc vien
tien anh » tieng anh, tien manh, dien anh
cong dan » cong san, cong tan, cong dong
toan ban » van 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: hoc tien anh - hanh tranh hoac khong ((cong dan) OR (huong dan)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc tien anh - hanh tranh hoac khong ((cong dan) or (huong dan)) toan ban*.