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have proved by is the most popular phrase on the web.

have proved through 119,700 results on the web	have proved by 12,450,000 results on the web More popular!
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Given that an infringement of EC law can be proved through the simplest investigation, what action will the Commission take against Cyprus in order to protect EU nationals' rights? They have proved this through their struggles, through their rallies, through the mass pan European rally that was recently held in Brussels with the participation of the 15 Member States, and through the rallies in the enlargement countries, such as Poland. Therefore, in those circumstances, I welcome the fact that the Central Bank proved itself through its interest decisions last week. I am convinced that this is not so, something that I think is proved through the work of REACH. It has proved possible to push through pragmatic simplifications that reduce bureaucracy. Who proved through hard work and dedication that the people who died did not die in vain. The European Parliament has proved through the compromises in its reports that an agreement is possible, including on the crucial points.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

have proved through

119,700 results on the web

have proved by

12,450,000 results on the web

More popular!

Given that an infringement of EC law can be proved through the simplest investigation, what action will the Commission take against Cyprus in order to protect EU nationals' rights?
They have proved this through their struggles, through their rallies, through the mass pan
European rally that was recently held in Brussels with the participation of the 15 Member States, and through the rallies in the enlargement countries, such as Poland.
Therefore, in those circumstances, I welcome the fact that the Central Bank proved itself through its interest decisions last week.
I am convinced that this is not so, something that I think is proved through the work of REACH.
It has proved possible to push through pragmatic simplifications that reduce bureaucracy.
Who proved through hard work and dedication that the people who died did not die in vain.
The European Parliament has proved through the compromises in its reports that an agreement is possible, including on the crucial points.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.