Perhaps you should try some spelling variations:
multiobjective estimation » multiobjective optimization
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
cac algorithm » adam algorithm, _ algorithm, mom algorithm
code tich » co tich
tich cac » tich va, tich bao

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• Performing a fuzzy search may retrieve terms with similar spellings: (( modified multiobjective estimation algorithms ) or ( code tich cac algorithm ))~.
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