You have both Google Site Search and Zoom Search activated
The Smartphone skins now support Help & Manual's integrated Zoom search engine as well as Google Site Search. Google Site Search is a legacy option from when the SmartPhone skins did not support Zoom. For integrated search with Zoom just activate the search option in your skin in Configuration > Publishing Options > WebHelp > Navigation and leave the Google Site Search option turned off in the Publish dialog. If you want to continue to use Google Site Search turn off Zoom Search in Configuration > Publishing Options > WebHelp > Navigation.