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)
"recent study algorithm" » "recent wsindy algorithm" (Expand Search), "recent td3 algorithm" (Expand Search), "recent seu algorithm" (Expand Search), "present study algorithm" (Expand Search), "recent studies algorithm" (Expand Search)
"element finding algorithm" » "element bonding algorithm" (Expand Search), "recent finding algorithm" (Expand Search), "present 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: (("recent study algorithm") OR ((("element finding algorithm") OR ("level coding algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"recent study algorithm\") OR (((\"element finding algorithm\") OR (\"level coding algorithm\"))))".
• Removing quotes may allow a broader search: (( recent study algorithm ) OR ((( element finding algorithm ) OR ( level coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("recent study algorithm") OR ((("element finding algorithm") OR ("level coding algorithm"))))*.