Perhaps you should try some spelling variations:
"data visualization python computer program" » "data visualization method computer program" (Expand search), "data visualization methods computer program" (Expand search), "data visualization tool computer program" (Expand search)
"advanced modulation and decoding program" » "advanced calculation and decoding program" (Expand search), "advanced oxidation and decoding program" (Expand search), "advanced modulation and welcoming program" (Expand search), "advanced modulation and deworming program" (Expand search), "advanced modulation and feeding program" (Expand search), "advanced modulation in decoding program" (Expand search), "advanced modulation of decoding program" (Expand search), "advanced modulation and decaying program" (Expand search), "advanced modulation and coding program" (Expand search), "advanced modulation and decline program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation and decoding program\") OR (\"data visualization python computer program\"))~".
• Removing quotes may allow a broader search: (( advanced modulation and decoding program ) OR ( data visualization python computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation and decoding program") OR ("data visualization python computer program"))*.