Perhaps you should try some spelling variations:
"modified allocation optimization algorithms" » "modified allocation optimisation algorithm", "modified allocation estimation algorithms", "modified allocation estimation algorithm", "modified location optimization algorithms"
"modified discursive convolution algorithms" » "modified discursive construction algorithms", "modified discursive evolution algorithm", "modified discursive solution algorithm"

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 discursive convolution algorithms") or ("modified allocation optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified discursive convolution algorithms") OR ("modified allocation optimization algorithms")).
• Removing quotes may allow a broader search: (( modified discursive convolution algorithms ) or ( modified allocation optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified discursive convolution algorithms") or ("modified allocation optimization algorithms"))*.