Perhaps you should try some spelling variations:
"modified lighting optimization algorithms" » "modified lighting optimisation algorithm", "modified lighting estimation algorithms", "modified lighting optimized algorithms", "modified staffing optimization algorithms", "modified caging optimization algorithms"
"modified notion estimation algorithm" » "modified motion estimation algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified lighting optimization algorithms\") OR (\"modified notion estimation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified lighting optimization algorithms ) OR ( modified notion estimation algorithm ))~.
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