Besides Google and Bing there are others alternatives machines search, such as 2Lingual, with which you can find content and facilities not available on Google.
Although the Google Search as other search engines support multiple languages, none can search in two languages at the same time. In none other than 2Lingual.
What's interesting about 2Lingual is the fact that the core search technology is Google Search, so you won't lose quality, but you'll get something extra that the standalone doesn't offer tool of Google.
The users they can choose from a wide range of languages and have the results for two different search languages side by side. Of course, it also supports the Greek language. From our short experience with this tool, we can confidently say that it works quite well, so we have no problem recommending it.