Perhaps you should try some spelling variations:
"modified coverage approximation algorithms" » "modified average approximation algorithms"
"modified thermal regulation algorithm" » "modified thermal evolution algorithm", "modified thermal predation algorithm", "modified thermal estimation algorithm", "modified thermal degradation algorithm", "modified legal regulation 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 thermal regulation algorithm") OR ("modified coverage approximation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified thermal regulation algorithm\") OR (\"modified coverage approximation algorithms\"))".
• Removing quotes may allow a broader search: (( modified thermal regulation algorithm ) OR ( modified coverage approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified thermal regulation algorithm") OR ("modified coverage approximation algorithms"))*.