Perhaps you should try some spelling variations:
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level colony algorithm" (Expand Search), "level scheduling algorithm" (Expand Search)
"elements res algorithm" » "elements rd algorithm" (Expand Search), "elements deer algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elementi per algorithm" (Expand Search)
"element update algorithm" » "element updated algorithm" (Expand Search)

Try widening your search to All Fields.

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