Perhaps you should try some spelling variations:
"motion estimation algorithms" » "motion estimation algorithm", "motion optimization algorithms", "motion optimisation algorithm"
"_ simulation algorithm" » "_ estimation algorithm", "_ optimisation algorithm", "_ evolution algorithm"
"_ solution algorithm" » "_ evolution algorithm", "_ convolution algorithms", "_ evolutionary algorithm", "_ solutions algorithm"

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: (((("_ simulation algorithm") or ("_ solution algorithm"))) or ("motion estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("_ simulation algorithm") OR ("_ solution algorithm"))) OR ("motion estimation algorithms")).
• Removing quotes may allow a broader search: (((( _ simulation algorithm ) or ( _ solution algorithm ))) or ( motion estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("_ simulation algorithm") or ("_ solution algorithm"))) or ("motion estimation algorithms"))*.