Perhaps you should try some spelling variations:
"system modeling algorithm" » "system scheduling algorithm" (Expand Search), "systems modeling algorithm" (Expand Search)
"element mining algorithm" » "element cosine algorithm" (Expand Search), "elements mining algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural colony algorithm" (Expand Search), "neural scheduling algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("system modeling algorithm") OR ((("element mining algorithm") OR ("neural coding algorithm"))))~.
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• Removing quotes may allow a broader search: (( system modeling algorithm ) OR ((( element mining algorithm ) OR ( neural coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("system modeling algorithm") OR ((("element mining algorithm") OR ("neural coding algorithm"))))*.