Perhaps you should try some spelling variations:
"stronger science using mobile" » "springer science using mobile", "stronger evidence using mobile", "astronomy science using mobile"
"stronger stance using mobile" » "stronger state using mobile", "stronger cancer using mobile", "stronger starts using mobile", "stronger distance using mobile", "stronger instance using mobile", "stronger stance during mobile"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("stronger science using mobile") OR ("stronger stance using mobile"))) OR ("springer estate business models")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"stronger science using mobile\") OR (\"stronger stance using mobile\"))) or (\"springer estate business models\"))".
• Removing quotes may allow a broader search: (((( stronger science using mobile ) OR ( stronger stance using mobile ))) or ( springer estate business models )).
• Adding a wildcard symbol may retrieve word variants: (((("stronger science using mobile") OR ("stronger stance using mobile"))) or ("springer estate business models"))*.