Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
truong cao » truong dai
bien tinh » bi tinh, yen tinh, diep tinh
pho bien » phan bien, che bien, so bien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: pho bien tinh - manh ((dung luan) OR (truong cao)) nhung cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pho bien tinh - manh ((dung luan) OR (truong cao)) nhung cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: pho bien tinh - manh ((dung luan) OR (truong cao)) nhung cong dan toan cau*.