Perhaps you should try some spelling variations:
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level routing algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"elements each algorithm" » "elements search algorithm" (Expand Search), "elements means algorithm" (Expand Search), "elements crcy algorithm" (Expand Search), "elements uce algorithm" (Expand Search), "experiments each algorithm" (Expand Search)
"implement finding algorithm" » "implemented finding algorithm" (Expand Search), "implementing finding algorithm" (Expand Search), "implement 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 finding algorithm") OR ("elements each algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"implement finding algorithm\") OR (\"elements each algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( implement finding algorithm ) OR ( elements each algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("implement finding algorithm") OR ("elements each algorithm"))) OR ("level coding algorithm"))*.