Perhaps you should try some spelling variations:
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
mathematical union » mathematical function, mathematical question, mathematical solution
mathematical user » mathematics user, mathematical using, esomathematical uses
mathematical und » mathematica und, mathematical using, mathematical path
ergebnisse mer » ergebnisse mean, ergebnisse mit, ergebnisse 3
oder surveys » der surveys, other surveys, cover surveys

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