Perhaps you should try some spelling variations:
hanh dong » anh dong, ha dong
dong luan » dung luan, tong luan, dong xuan
hoc tien » hoc tieng, hoc hien, hoc vien
tien anh » tieng anh, tien manh, dien anh
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan dau » hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tien anh - hanh dong luan van ((cong dan) or (cong san)) ((phan dau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien anh - hanh dong luan van ((cong dan) OR (cong san)) ((phan dau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc tien anh - hanh dong luan van ((cong dan) or (cong san)) ((phan dau) or (phan tu))*.