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