Perhaps you should try some spelling variations:
online mode » online model, online medien, online media
linear mode » linear model, linear models, bilinear model
line models » linear models, murine models, linear model
line model » linear model, linear models, murine model

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: (((( online mode ) OR ( linear mode ))) OR ((( line models ) OR ( line model )))).
• Adding a wildcard symbol may retrieve word variants: (((( online mode ) or ( linear mode ))) or ((( line models ) or ( line model ))))*.