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

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

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