Perhaps you should try some spelling variations:
"modified coverage approximation algorithms" » "modified average approximation algorithms"
"modified charging station algorithms" » "modified charging estimation algorithms", "modified charging estimation algorithm", "modified charging solution algorithm", "modified caging station algorithms", "modified carbon station algorithms"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified charging station algorithms") OR ("modified coverage approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified charging station algorithms ) or ( modified coverage approximation algorithms ))~.
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