Perhaps you should try some spelling variations:
"modified up convolution algorithms" » "modified up evolution algorithm", "modified up solution algorithm", "modified _ convolution algorithms", "modified df convolution algorithms", "modified bi1 convolution algorithms"
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified motion estimation 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 up convolution algorithms") OR ("modified notion estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified up convolution algorithms ) or ( modified notion estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified up convolution algorithms") or ("modified notion estimation algorithms"))*.