Perhaps you should try some spelling variations:
authenticity relation » authenticity protection, authentic interpretation, authenticity aspirations
empirical fractions » empirical directions, empirical section, empirical equations
empirical sections » empirical section, empirical directions, empirical relations
given authenticity » over authenticity, german authenticity, travel authenticity

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( german ((empirical fractions) or (empirical sections)). ) or ( given authenticity relation. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( german ((empirical fractions) OR (empirical sections)). ) OR ( given authenticity relation. )).
• Adding a wildcard symbol may retrieve word variants: (( german ((empirical fractions) or (empirical sections)). ) or ( given authenticity relation. ))*.