Tryed to use iTunes API, but pointed that there are no bundles in results.
For example, here are results in App Store: http://i61.tinypic.com/m6b92.jpg
And here are iTunes API results of this request https://www.apple.com/itunes/affiliates/resources/documentation/itunes-store-web-service-search-api.html:
- TextGrabber + Translator...
- FineScanner...
- Словарь Lingvo...
- Lingvo Live от ABBYY
How to get bundles in search?
I've had luck searching by the developer/publisher. For instance, I was looking for the "Go Trilogy" bundle from Square-Enix. Searching "Square Enix" brought up ALL of their releases AND currently offered bundles. Hope this helps someone.