Perhaps you should try some spelling variations:
"modified affected digitization algorithm" » "modified affected optimization algorithms", "modified affected estimation algorithm", "modified affected optimisation algorithm", "modified affects digitization algorithm"
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"

Try widening your search to All Fields.

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

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