Perhaps you should try some spelling variations:
"query modeling algorithm" » "query scheduling algorithm" (Expand Search)
"element method algorithm" » "element mould algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"presence update algorithm" » "presented update algorithm" (Expand Search), "present update algorithm" (Expand Search), "presents update algorithm" (Expand Search), "presence updated algorithm" (Expand Search)

Try widening your search to All Fields.

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