Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation algorithm"
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"pulse optimized algorithm" » "pulse optimized algorithms", "pulse optimizer algorithms"

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

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