Perhaps you should try some spelling variations:
"element modeling algorithm" » "element scheduling algorithm" (Expand Search), "elements modeling algorithm" (Expand Search)
"element routing algorithm" » "element cosine algorithm" (Expand Search), "elements routing algorithm" (Expand Search)
"element ore algorithm" » "element rd algorithm" (Expand Search), "element deer algorithm" (Expand Search), "element cosine algorithm" (Expand Search), "elements ore algorithm" (Expand Search)

Try widening your search to All Fields.

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