Perhaps you should try some spelling variations:
"robust estimation algorithms" » "robust estimation algorithm", "robust optimization algorithms", "robust optimisation algorithm", "pose estimation algorithms", "risk estimation algorithms"
"_ optimiser algorithms" » "_ optimizer algorithms", "_ optimized algorithms", "_ optimized algorithm"
"_ optimize algorithms" » "_ optimized algorithms", "_ optimizer algorithms", "_ optimized algorithm", "_ optimise algorithms"

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

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