Perhaps you should try some spelling variations:
"develop tested algorithms" » "develop based algorithms" (Expand Search), "develop best algorithms" (Expand Search), "develop based algorithm" (Expand Search), "levels tested algorithms" (Expand Search), "develop targeted algorithms" (Expand Search)
"element data algorithms" » "element art algorithms" (Expand Search), "element all algorithms" (Expand Search), "element both algorithms" (Expand Search), "settlement data algorithms" (Expand Search), "relevant data algorithms" (Expand Search), "movement data algorithms" (Expand Search)
"data using algorithm" » "data using algorithms" (Expand Search), "data routing algorithm" (Expand Search), "data fusion algorithm" (Expand Search)

Try widening your search to All Fields.

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