Perhaps you should try some spelling variations:
"linear mode" » "bilinear model", "nonlinear mode", "linear mixed"
"linear model" » "bilinear modell", "nonlinear model", "linear mixedl"
"linear models" » "bilinear modells", "nonlinear models", "linear mixedls"
"line mode" » "line model", "line models", "online mode"

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