Android : How to get the GPS location of gun stores, gunsmiths, shooting ranges and firearm training based on US using google api in android?

I am developing one android application to return the GPS location of gun stores, gunsmiths, shooting ranges and firearm training based on US. I have been reading the google map and places api documention. But, Could not make it possible. If we search these (i.e gun stores, gunsmiths, firearm training etc.) on maps.google.com. it returns the location.