Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
van thuong » va thuong, van chuong, van phuong
tranh luan » trinh luan, trinh luat, doanh luan
hoc thieu » toc thieu, hoc hien
cong sach » ong sach, duong sach, luong sach
song sach » sang sach, ong sach, song bach
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 thuong ((cong sach) OR (song 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 thuong ((cong sach) OR (song sach)) tranh luan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc thieu)) sang - thanh tran van thuong ((cong sach) OR (song sach)) tranh luan".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sang - thanh tran van thuong ((cong sach) OR (song sach)) tranh luan*.