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

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

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