Perhaps you should try some spelling variations:
22ergebnisse der » ergebnisse der, endergebnisse der, undergebnisse der
modern purveyors » modern purgatory
power purveyor » porter surveyor
modern surveys » oder surveys, modern surgery, models survey
modern survey » modern surgery, models survey, model survey
und ihrer » und ihre
und ihr » und ihre
2c a » 12c a, 2 a, 20 a

Try widening your search to All Fields.

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: %22ergebnisse der (mathematik OR mathematical) ((und ihrer) OR (und ihr)) grenzgebiete. 2. folge%((2c a) OR (c a)) series of ((((modern surveys) OR (((modern purveyors) OR (power purveyor))))) OR (modern survey)) in mathematics%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22ergebnisse der (mathematik or mathematical) ((und ihrer) OR (und ihr)) grenzgebiete. 2. folge%((2c a) or (c a)) series of ((((modern surveys) or (((modern purveyors) or (power purveyor))))) or (modern survey)) in mathematics%22".
• Adding a wildcard symbol may retrieve word variants: %22ergebnisse der (mathematik or mathematical) ((und ihrer) OR (und ihr)) grenzgebiete. 2. folge%((2c a) or (c a)) series of ((((modern surveys) or (((modern purveyors) or (power purveyor))))) or (modern survey)) in mathematics%22*.