Perhaps you should try some spelling variations:
nhung tuong » nhung phuong, hung vuong, nhung cong
nhung huong » nhung phuong, nhung cong, nhung dung
dung phuong » dung thuong, bang phuong, dung chung
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap

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 lang - canh tranh cua ((((nhung huong) OR (nhung tuong))) or (dung phuong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - canh tranh cua ((((nhung huong) OR (nhung tuong))) OR (dung phuong)) van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu lang - canh tranh cua ((((nhung huong) OR (nhung tuong))) or (dung phuong)) van toan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - canh tranh cua ((((nhung huong) OR (nhung tuong))) or (dung phuong)) van toan cau*.