Perhaps you should try some spelling variations:
"modified lighting optimization algorithmss" » "modified lighting optimization algorithms", "modified lighting optimisation algorithm", "modified lighting estimation algorithms", "modified lighting estimation algorithmss", "modified staffing optimization algorithmss", "modified caging optimization algorithmss"
"modified objective estimation algorithm" » "modified objective optimization algorithm", "modified objective allocation algorithm"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective estimation algorithm\") OR (\"modified lighting optimization algorithmss\"))~".
• Removing quotes may allow a broader search: (( modified objective estimation algorithm ) OR ( modified lighting optimization algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective estimation algorithm") OR ("modified lighting optimization algorithmss"))*.