Perhaps you should try some spelling variations:
optimization local » optimization load (Expand search), optimizacao local (Expand search), optimization medical (Expand search)
section algorithm » selection algorithm (Expand search), bisection algorithm (Expand search), election algorithm (Expand search)
using decoding » using coding (Expand search), using denoising (Expand search), coding decoding (Expand search)
code section » code inspection (Expand search), mode selection (Expand search), code detection (Expand search)

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