Perhaps you should try some spelling variations:
"age modeling algorithm" » "age making algorithm" (Expand Search), "case modeling algorithm" (Expand Search), "a modeling algorithm" (Expand Search), "afm modeling algorithm" (Expand Search)
"elements tree algorithms" » "elements three algorithms" (Expand Search), "elements art algorithms" (Expand Search), "elements two algorithms" (Expand Search), "elements ree algorithms" (Expand Search), "element ree algorithms" (Expand Search), "elements res algorithms" (Expand Search)
"element based algorithm" » "engagement based algorithm" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("age modeling algorithm") OR ((("element based algorithm") OR ("elements tree algorithms"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"age modeling algorithm\") OR (((\"element based algorithm\") OR (\"elements tree algorithms\"))))".
• Removing quotes may allow a broader search: (( age modeling algorithm ) OR ((( element based algorithm ) OR ( elements tree algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("age modeling algorithm") OR ((("element based algorithm") OR ("elements tree algorithms"))))*.