Perhaps you should try some spelling variations:
order mathematical » other mathematical, modern mathematical, cover mathematical
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
der mathematical » her mathematical, mer mathematical, over mathematical
consumer surveys » consumer survey, consumer surplus, consumer services
cover surveys » care surveys, other surveys, user surveys
und ihrer » und ihre, und ihr

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