Perhaps you should try some spelling variations:
mathematical beings » mathematical meanings, mathematical settings, mathematical beliefs
mathematical using » mathematica using, mathematical testing, mathematical making
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, deren grenzgebiete
mathematics using » mathematics ukslc, mathematics teaching, mathematics learning
der grenzgebiete » die grenzgebiete, dem grenzgebiet, ihre grenzgebiete
modern survey » modern surgery, models survey, model survey

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