Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong doan » phuong loan, phuong hoang, huong dan
hanh tranh » hanh trinh, hanh trang, lanh tranh
lieu tinh » diep tinh, bien tinh
cua nhung » va nhung
doan van » doan va, hoang 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: cot ((lieu tinh) OR (trieu tinh)) - ((hanh tranh) or (canh tranh)) cua nhung phuong doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cot ((lieu tinh) OR (trieu tinh)) - ((hanh tranh) OR (canh tranh)) cua nhung phuong doan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cot ((lieu tinh) OR (trieu tinh)) - ((hanh tranh) or (canh tranh)) cua nhung phuong doan van ban".
• Adding a wildcard symbol may retrieve word variants: cot ((lieu tinh) OR (trieu tinh)) - ((hanh tranh) or (canh tranh)) cua nhung phuong doan van ban*.