Perhaps you should try some spelling variations:
"implement modeling algorithm" » "element modeling algorithm" (Expand Search), "element modelling algorithm" (Expand Search), "implement making algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural finding algorithm" (Expand Search), "neural routing algorithm" (Expand Search)
"present pso algorithm" » "present lasso algorithm" (Expand Search), "present _ algorithm" (Expand Search), "present ii algorithm" (Expand Search), "present vs algorithm" (Expand Search), "present proof algorithm" (Expand Search), "present cryo algorithm" (Expand Search)

Try widening your search to All Fields.

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