Perhaps you should try some spelling variations:
"complement forest algorithm" » "complement past algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"elements uce algorithm" » "elements each algorithm" (Expand Search), "elements cc3d algorithm" (Expand Search), "elements ipca algorithm" (Expand Search), "elements ices algorithm" (Expand Search), "elements fe algorithm" (Expand Search), "elements ree algorithm" (Expand Search)

Try widening your search to All Fields.

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