Perhaps you should try some spelling variations:
luan phuong » lan phuong, quang phuong, doan phuong
chieu lang » chieu sang, hieu lang, chi lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
doi chieu » doc hieu, doi chi, mot chieu
quan van » luan van, quan va, quan doan
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu lang - hanh tranh luan phuong ((quan luan) or (quan van)) van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu lang - hanh tranh luan phuong ((quan luan) OR (quan van)) van chat.
• Adding a wildcard symbol may retrieve word variants: doi chieu lang - hanh tranh luan phuong ((quan luan) or (quan van)) van chat*.