Perhaps you should try some spelling variations:
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean 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)
"complement rl algorithm" » "complement _ algorithm" (Expand Search), "complement 5a algorithm" (Expand Search), "complement c3 algorithm" (Expand Search), "complement rl algorithms" (Expand Search), "complement rf algorithm" (Expand Search), "complement ml algorithms" (Expand Search)

Try widening your search to All Fields.

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