Perhaps you should try some spelling variations:
"motion estimation algorithms" » "motion estimation algorithm", "motion optimization algorithms", "motion optimisation algorithm", "notion estimation algorithms"
"a simulation algorithm" » "a estimation algorithm", "a solution algorithm", "a optimisation algorithm"
"_ simulation algorithm" » "_ estimation algorithm", "_ solution algorithm", "_ optimisation algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("motion estimation algorithms") or ((("a simulation algorithm") OR ("_ simulation algorithm"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("motion estimation algorithms") OR ((("a simulation algorithm") OR ("_ simulation algorithm")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"motion estimation algorithms\") or (((\"a simulation algorithm\") OR (\"_ simulation algorithm\"))))".
• Removing quotes may allow a broader search: (( motion estimation algorithms ) or ((( a simulation algorithm ) OR ( _ simulation algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("motion estimation algorithms") or ((("a simulation algorithm") OR ("_ simulation algorithm"))))*.