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)
"present model algorithm" » "present novel algorithm" (Expand Search), "element model algorithm" (Expand Search), "rodent model algorithm" (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 model algorithm") OR ("present forest algorithm"))) OR ("element mapping algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"present model algorithm\") OR (\"present forest algorithm\"))) OR (\"element mapping algorithm\"))*".
• Removing quotes may allow a broader search: (((( present model algorithm ) OR ( present forest algorithm ))) OR ( element mapping algorithm ))*.