Perhaps you should try some spelling variations:
vien nganh » vien thanh
thien anh » thien danh, tien anh, thien thanh
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tran van » luan van
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (vien nganh)) - hanh tran van nhung ((cong dong) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (vien nganh)) - hanh tran van nhung ((cong dong) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (vien nganh)) - hanh tran van nhung ((cong dong) or (cong san)) toan cao*.