Perhaps you should try some spelling variations:
"line modells" » "line models", "eines modells", "eine modell", "linear modells", "linear modelsls", "murine modells", "line modelslls", "online modells"
"line model" » "linear model", "linear models", "murine model", "line modelsl", "online model"
"line mode" » "line models", "linear mode", "online mode"

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: (((("line mode") OR ("line model"))) OR ("line modells")).
• Removing quotes may allow a broader search: (((( line mode ) or ( line model ))) or ( line modells )).
• Adding a wildcard symbol may retrieve word variants: (((("line mode") or ("line model"))) or ("line modells"))*.