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