Perhaps you should try some spelling variations:
"element mapping algorithm" » "element sampling algorithm" (Expand Search), "element matching algorithm" (Expand Search), "element mining algorithm" (Expand Search), "elemental mapping algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"event five algorithms" » "event four algorithms" (Expand Search), "event based algorithms" (Expand Search), "event three algorithms" (Expand Search), "event free algorithms" (Expand Search), "event driven algorithms" (Expand Search)
"present forest algorithm" » "present free algorithm" (Expand Search)

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

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