Perhaps you should try some spelling variations:
"hedonic model" » "hedonica model", "hedonic modelo"
"hedonico model" » "hedonicao model", "hedonico modelo", "hedonica model", "edenico model", "helenico model"
"hedonismo model" » "hedonismo modelo", "peronismo model", "helenismo model"
"hedonista model" » "hedonista modelo", "peronista model", "hedonica model", "helenista model"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"hedonic model\") OR (((((\"hedonismo model\") OR (\"hedonico model\"))) OR (\"hedonista model\"))))~".
• Removing quotes may allow a broader search: (( hedonic model ) OR ((((( hedonismo model ) OR ( hedonico model ))) OR ( hedonista model ))))~.
• Adding a wildcard symbol may retrieve word variants: (("hedonic model") OR ((((("hedonismo model") OR ("hedonico model"))) OR ("hedonista model"))))*.