Yes, Google can search for SVG files. Lifehacker agrees.
January 28, 2011
Google Image Search Indexes SVG Files Last year,
Google announced that it started to index SVG files, but the results
were only returned by the web search engine. "SVG is an open,
XML-based format for vector graphics with support for interactive
elements. We're big fans of open standards, and our mission is to
organize the world's information, so indexing SVG is a natural step.
We index SVG content whether it is in a standalone file or embedded
directly in HTML," explained Google at that time.
Now you can find SVG files in Google Image Search by restricting the
results to this filetype in the advanced search page or by using the
filetype operator. Here's an example: [molecule filetype:svg]. If you
restrict the results to Wikipedia, Google returns 57,300 SVG files.