Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
luan phan » luan van, luan hoan
tranh va » tranh van, trang va, trinh va
dan phan » doan phan, dan chan, van phan
van chat » cao chat
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - canh tranh va nhung cong ((((dan phan) or (luan phan))) or (van chat)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - canh tranh va nhung cong ((((dan phan) OR (luan phan))) OR (van chat)) cau.
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - canh tranh va nhung cong ((((dan phan) or (luan phan))) or (van chat)) cau*.