Today, a new search i have explored on internet named Amp-what. Its very interesting to have things like this.
Here is an example of search results for weather.
About Amp-what :
amp-what is a quick, interactive reference of 14,500 HTML character entities* and common Unicode characters, 8859-1 characters, quotation marks, punctuation marks, accented characters, symbols, mathematical symbols, and Greek letters, icons, and markup-significant & internationalization characters.
Matt Cutts, also give his feedback what he thinks about this search engine @ Hacker news