Perhaps you should try some spelling variations:
"implement routing algorithm" » "implement cosine algorithm" (Expand Search), "implemented routing algorithm" (Expand Search), "implementing routing algorithm" (Expand Search)
"elements rf algorithm" » "elements rd algorithm" (Expand Search), "elements _ algorithms" (Expand Search), "elements _ algorithm" (Expand Search)
"neural finding algorithm" » "neural findings algorithm" (Expand Search)

Try widening your search to All Fields.

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