Perhaps you should try some spelling variations:
"modified adaptive quantization algorithms" » "modified adaptive optimization algorithms", "modified adaptive ventilation algorithms", "modified passive quantization algorithms"
"designed network estimation algorithms" » "designed network estimation algorithm", "designed network optimization algorithms", "designed network optimisation algorithm", "defined network estimation algorithms"

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: (("designed network estimation algorithms") or ("modified adaptive quantization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("designed network estimation algorithms") OR ("modified adaptive quantization algorithms")).
• Removing quotes may allow a broader search: (( designed network estimation algorithms ) or ( modified adaptive quantization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("designed network estimation algorithms") or ("modified adaptive quantization algorithms"))*.