Perhaps you should try some spelling variations:
modeling algorithm » mining algorithm (Expand Search), sampling algorithm (Expand Search), matching algorithm (Expand Search)
element matching » employment matching (Expand Search), element within (Expand Search), eplet matching (Expand Search)
element modeling » element modelling (Expand Search), element model (Expand Search)
element mapping » elemental mapping (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"((element matching) OR (element mapping)) algorithm\\") OR (\\"element modeling algorithm\\"))~\"".
• Removing quotes may allow a broader search: (( ((element matching) OR (element mapping)) algorithm ) OR ( element modeling algorithm ))~.