Google Ngram Viewer
This tool allows you to view how often case-sensitive comma-separated phrases appear in Google Books (until 2008 as far as I can see) from various languages. Interesting to see Love scores a lot lower than Sex and “yes we can” was popular in 1930 – 1935 as well as 1944 – 1950 and started on Read more about Google Ngram Viewer[…]