Perhaps you should try some spelling variations:
mathematical union » mathematical function, mathematical question, mathematical solution
mathematical using » mathematica using, mathematical testing, mathematical beings
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
mathematics using » mathematics ukslc, mathematics teaching, mathematics learning
mathematical und » mathematica und, mathematical user, mathematical path
modern surveys » modern survey, oder surveys, modern purveyors

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