Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
hien tach » thien hach, chiet tach, vien bach
cong cong » cong dong, trong cong, dung cong
mang cua » dung cua, ban cua, cong cua
manh cua » doanh cua, ban cua
cong tac » cong ty
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - hanh ((mang cua) or (manh cua)) cong cong tac ((tran van) or (tranh luan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - hanh ((mang cua) OR (manh cua)) cong cong tac ((tran van) OR (tranh luan)).
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - hanh ((mang cua) or (manh cua)) cong cong tac ((tran van) or (tranh luan))*.