Perhaps you should try some spelling variations:
"joint modeling algorithm" » "joint making algorithm" (Expand Search), "joint model algorithm" (Expand Search)
"element method algorithms" » "element both algorithms" (Expand Search), "element other algorithms" (Expand Search), "element tested algorithms" (Expand Search)
"element two algorithms" » "element ml algorithms" (Expand Search), "element _ algorithms" (Expand Search), "element art algorithms" (Expand Search), "element te algorithms" (Expand Search)

Try widening your search to All Fields.

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