Perhaps you should try some spelling variations:
"modified orcamplexity approximation algorithms" » "modified complexity approximation algorithms"
"modified df evolutionary algorithm" » "modified df evolution algorithm", "modified df solution algorithm", "modified _ evolutionary algorithm", "modified adam evolutionary algorithm", "modified bi1 evolutionary 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 df evolutionary algorithm") OR ("modified orcamplexity approximation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified df evolutionary algorithm\") OR (\"modified orcamplexity approximation algorithms\"))".
• Removing quotes may allow a broader search: (( modified df evolutionary algorithm ) OR ( modified orcamplexity approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified df evolutionary algorithm") OR ("modified orcamplexity approximation algorithms"))*.