Perhaps you should try some spelling variations:
"modified coverage approximation algorithms" » "modified average approximation algorithms"
"modified saline solution algorithms" » "modified saline solution algorithm", "modified saline evolution algorithm", "modified saline convolution algorithms", "modified caging solution algorithms", "modified male solution algorithms", "modified passive solution 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: "((\"modified saline solution algorithms\") OR (\"modified coverage approximation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified saline solution algorithms ) OR ( modified coverage approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified saline solution algorithms") OR ("modified coverage approximation algorithms"))*.