Perhaps you should try some spelling variations:
"modified _ optimization algorithm" » "modified _ optimization algorithms", "modified _ optimisation algorithm", "modified _ estimation algorithm"
"modified attribute optimization algorithm" » "modified attribute optimization algorithms", "modified attribute optimisation algorithm", "modified attribute estimation algorithm", "modified attributed optimization algorithm", "modified attributes optimization algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified _ optimization algorithm") OR ("modified attribute optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified _ optimization algorithm\") OR (\"modified attribute optimization algorithm\"))".
• Removing quotes may allow a broader search: (( modified _ optimization algorithm ) OR ( modified attribute optimization algorithm )).
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