Perhaps you should try some spelling variations:
"modified multiobjective allocation algorithm" » "modified objective allocation algorithm", "modified multiobjective estimation algorithm", "modified multiobjective evolution algorithm", "modified multiobjective predation algorithm"
"modified objective solution algorithms" » "modified objective solution algorithm", "modified objective evolution algorithm", "modified objective convolution algorithms", "modified objective evolutionary algorithms", "modified objective allocation algorithms"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified multiobjective allocation algorithm") OR ("modified objective solution algorithms"))~.
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• Removing quotes may allow a broader search: (( modified multiobjective allocation algorithm ) OR ( modified objective solution algorithms ))*.