Perhaps you should try some spelling variations:
"improvements make algorithm" » "improvements can algorithm" (Expand Search), "improvements _ algorithm" (Expand Search), "improvements also algorithm" (Expand Search), "improvements making algorithm" (Expand Search), "improvements based algorithm" (Expand Search), "improvements means algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"element pso algorithm" » "element lasso algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element mesh algorithm" (Expand Search), "elements ppm algorithm" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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