Perhaps you should try some spelling variations:
"based modeling algorithm" » "based making algorithm" (Expand Search), "based model algorithm" (Expand Search), "based models algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"levels using algorithms" » "levels pacing algorithms" (Expand Search), "levels nine algorithms" (Expand Search), "levels sorting algorithms" (Expand Search), "level using algorithms" (Expand Search), "models using algorithms" (Expand Search), "cells using 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: (("based modeling algorithm") OR ((("element method algorithm") OR ("levels using algorithms"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based modeling algorithm\") OR (((\"element method algorithm\") OR (\"levels using algorithms\"))))".
• Removing quotes may allow a broader search: (( based modeling algorithm ) OR ((( element method algorithm ) OR ( levels using algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("based modeling algorithm") OR ((("element method algorithm") OR ("levels using algorithms"))))*.