Perhaps you should try some spelling variations:
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
mathematical using » mathematica using, mathematics using, mathematical testing
mathematical und » mathematica und, mathematical union, mathematical user
modern survey » modern surgery, model survey, modeling survey
models survey » modeling survey, models supply

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: ergebnisse der ((mathematical und) OR (mathematical using)) ihrer grenzgebiete. 2. folge, a series of ((modern survey) OR (models survey)) in mathematics.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ergebnisse der ((mathematical und) OR (mathematical using)) ihrer grenzgebiete. 2. folge, a series of ((modern survey) or (models survey)) in mathematics".
• Adding a wildcard symbol may retrieve word variants: ergebnisse der ((mathematical und) OR (mathematical using)) ihrer grenzgebiete. 2. folge, a series of ((modern survey) or (models survey)) in mathematics*.