Perhaps you should try some spelling variations:
"experiments based algorithm" » "experiments showed algorithm" (Expand Search), "experimental basis algorithm" (Expand Search), "experimental case algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"element monte algorithm" » "element multi algorithm" (Expand Search), "element modbo algorithm" (Expand Search), "element mogwo algorithm" (Expand Search), "element content algorithm" (Expand Search), "element model algorithm" (Expand Search), "element te 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 monte algorithm") OR ("experiments based algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element monte algorithm\") OR (\"experiments based algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( element monte algorithm ) OR ( experiments based algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element monte algorithm") OR ("experiments based algorithm"))) OR ("level coding algorithm"))*.