Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"powder forecasting mixed algorithm" » "powder forecasting method algorithm", "powder forecasting air algorithm", "powder forecasting driven algorithm", "powder forecasting winner algorithm", "power forecasting mixed algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("powder forecasting mixed algorithm") or ("modified notion approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("powder forecasting mixed algorithm") OR ("modified notion approximation algorithms")).
• Removing quotes may allow a broader search: (( powder forecasting mixed algorithm ) or ( modified notion approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("powder forecasting mixed algorithm") or ("modified notion approximation algorithms"))*.