Perhaps you should try some spelling variations:
testing algorithm » hastings algorithm (Expand search), routing algorithm (Expand search), learning algorithm (Expand search)
using decoding » using coding (Expand search), using denoising (Expand search), coding decoding (Expand search)
modal testing » model testing (Expand search), soil testing (Expand search), pool testing (Expand search)
decoding tool » decoding to (Expand search), decoding two (Expand search), geocoding tools (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modal testing algorithm optimization _ ) OR ( using decoding tool python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( modal testing algorithm optimization _ ) OR ( using decoding tool python programming ))*.