Perhaps you should try some spelling variations:
"hedonic model" » "hedonic modelo"
"hedonica model" » "hedonica modelo", "hedonista model", "veronica model", "helenica model"
"hedonico model" » "hedonico modelo", "hedonismo model", "edenico model", "helenico model"
"hedonicoa model" » "hedonicoa modelo", "hedonismoa model", "edenicoa model", "helenicoa model", "hedonista model"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hedonic model") OR ("hedonica model"))) OR ((("hedonico model") OR ("hedonicoa model"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"hedonic model\") OR (\"hedonica model\"))) OR (((\"hedonico model\") OR (\"hedonicoa model\"))))*".
• Removing quotes may allow a broader search: (((( hedonic model ) OR ( hedonica model ))) OR ((( hedonico model ) OR ( hedonicoa model ))))*.