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