Perhaps you should try some spelling variations:
"modified notion optimisation algorithm" » "modified notion optimization algorithms", "modified notion estimation algorithm", "modified notion estimation algorithms", "modified network optimization algorithm"
"modified allocation optimizer algorithms" » "modified allocation optimization algorithms", "modified allocation optimized algorithms", "modified allocation optimized 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 notion optimisation algorithm") or ("modified allocation optimizer algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified notion optimisation algorithm") OR ("modified allocation optimizer algorithms")).
• Removing quotes may allow a broader search: (( modified notion optimisation algorithm ) or ( modified allocation optimizer algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified notion optimisation algorithm") or ("modified allocation optimizer algorithms"))*.