Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tran van » luan van
van quan » van ban
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (theo tieu)) sach - hanh tran van nhung cong ((van tai) or (van quan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo tieu)) sach - hanh tran van nhung cong ((van tai) OR (van quan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo tieu)) sach - hanh tran van nhung cong ((van tai) or (van quan)) cau*.