Perhaps you should try some spelling variations:
viet thanh » viet anh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cong doan » dong doanh, cong san, cong dong
cong hoan » cong hoa, dong hoa, cong san
hoc viet » hoc hien
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc viet thanh - hanh tranh cua dang ((((cong doan) or (cong dan))) or (cong hoan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc viet thanh - hanh tranh cua dang ((((cong doan) OR (cong dan))) OR (cong hoan)) phan tu.
• Adding a wildcard symbol may retrieve word variants: hoc viet thanh - hanh tranh cua dang ((((cong doan) or (cong dan))) or (cong hoan)) phan tu*.