Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
van phuong » van phong, va phuong, van chuong
tranh luan » trinh luan, trinh luat, doanh luan
hoc thieu » toc thieu, hoc hien
cong sach » ong sach, song sach, duong sach
sang sach » mang sach, ban sach, sang tac
doc hieu » toc thieu, hoc hien
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: ((doc hieu) or (hoc thieu)) sang - thanh tran van phuong ((cong sach) or (sang sach)) tranh luan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sang - thanh tran van phuong ((cong sach) OR (sang sach)) tranh luan.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sang - thanh tran van phuong ((cong sach) or (sang sach)) tranh luan*.