Perhaps you should try some spelling variations:
"data modeling algorithm" » "data making algorithm" (Expand Search), "data modelling algorithm" (Expand Search), "data models algorithm" (Expand Search)
"study clustering algorithm" » "fuzzy clustering algorithm" (Expand Search)
"relevant data algorithms" » "relevant art algorithms" (Expand Search), "relevant all algorithms" (Expand Search), "relevant both algorithms" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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