Perhaps you should try some spelling variations:
"spatial clustering algorithm" » "data clustering algorithm" (Expand Search)
"data modeling algorithm" » "data scheduling algorithm" (Expand Search), "data models algorithm" (Expand Search), "spatial modeling algorithm" (Expand Search)
"element abs algorithm" » "element jaya algorithm" (Expand Search), "element rd algorithm" (Expand Search), "elements abs algorithm" (Expand Search)

Try widening your search to All Fields.

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