How can I get a collection of chess games with a 'Greek gift' sacrifice? I would like to make a collection of chess games that feature the 'Greek gift' sacrifice. There are few games on chessgames.com annotated with this sacrifice. I could find blogs with individual examples of games with this type of sacrifice (example: 1, 2, 3, 4, 5, and 6); however they are not in a readily downloadable format. 

Is there a collection of games that feature this sacrifice? If not, is there any way I can search for and get collections of games featuring this sacrifice using a chess database like SCID?
Something which might help here is Chess Query Language. Just like SQL does for relational databases, CQL can search in a database of chess games for positions/games which match certain criteria.

I must say I have never used it myself, but it seems to be capable of amazing things, far more complex than what you're looking for. Here is an old article showing a few beautiful studies Tim Krabbé was able to find with the help of CQL.