Perhaps you should try some spelling variations:
hien manh » hien hanh, tien manh, hieu manh
hanh tran » hanh trang, thanh tran, hanh tram
dang cong » dung cong
tien anh » tieng anh, tien manh, dien anh
tran van » luan van
van dang » van dong, van dung, van nang
van toan » van tuan, van tan, van thanh

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 manh) or (tien anh)) - hanh tran van dang cong ((xuan toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (tien anh)) - hanh tran van dang cong ((xuan toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) or (tien anh)) - hanh tran van dang cong ((xuan toan) or (van toan)) cao*.