Perhaps you should try some spelling variations:
"engine optimization python computer program" » "engine optimization method computer program" (Expand search), "engine optimization option computer program" (Expand search), "engine optimization methods computer program" (Expand search)
"advanced modulation in decoding program" » "advanced calculation in decoding program" (Expand search), "advanced oxidation in decoding program" (Expand search), "advanced modulation in welcoming program" (Expand search), "advanced modulation in deworming program" (Expand search), "advanced modulation in feeding program" (Expand search), "advanced modulation of decoding program" (Expand search), "advanced modulation and decoding program" (Expand search), "advanced modulation _ decoding program" (Expand search), "advanced modulation in decaying program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation in decoding program\") OR (\"engine optimization python computer program\"))~".
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