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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"designed network approximation algorithm\") OR (\"modified adaptive optimization algorithms\"))~".
• Removing quotes may allow a broader search: (( designed network approximation algorithm ) OR ( modified adaptive optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("designed network approximation algorithm") OR ("modified adaptive optimization algorithms"))*.