Perhaps you should try some spelling variations:
"spatial modeling algorithm" » "spatial scheduling algorithm" (Expand Search), "statistical modeling algorithm" (Expand Search)
"image routing algorithm" » "image cosine algorithm" (Expand Search)
"element data algorithm" » "element jaya algorithm" (Expand Search), "element deer algorithm" (Expand Search), "elements data 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 data algorithm") OR ((("spatial modeling algorithm") OR ("image routing algorithm"))))~.
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• Removing quotes may allow a broader search: (( element data algorithm ) OR ((( spatial modeling algorithm ) OR ( image routing algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element data algorithm") OR ((("spatial modeling algorithm") OR ("image routing algorithm"))))*.