Perhaps you should try some spelling variations:
"online models" » "online model", "online mode", "spline models", "onlinear models", "onmurine models"
"linear mode" » "linear model", "linear models", "bilinear model"
"line models" » "line model", "linear models", "murine models"

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