Perhaps you should try some spelling variations:
"data modeling algorithm" » "data scheduling algorithm" (Expand Search), "data models algorithm" (Expand Search), "spatial modeling algorithm" (Expand Search)
"data finding algorithm" » "data mining algorithm" (Expand Search), "data hiding algorithm" (Expand Search)
"element tree algorithms" » "elements tree algorithms" (Expand Search), "element three algorithms" (Expand Search), "element free 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: (("element tree algorithms") OR ((("data finding algorithm") OR ("data modeling algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element tree algorithms\") OR (((\"data finding algorithm\") OR (\"data modeling algorithm\"))))".
• Removing quotes may allow a broader search: (( element tree algorithms ) OR ((( data finding algorithm ) OR ( data modeling algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element tree algorithms") OR ((("data finding algorithm") OR ("data modeling algorithm"))))*.