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)
"teaching perception in coding program" » "teaching perceptions in coding program" (Expand search), "teachers perception in coding program" (Expand search), "teacher perception in coding program" (Expand search), "teaching perception in cloning program" (Expand search), "teaching perception in loading program" (Expand search), "teaching perception in cooling programs" (Expand search), "teaching perception and coding program" (Expand search), "teaching perception on coding program" (Expand search), "teaching perception in decoding program" (Expand search), "teaching perception non coding program" (Expand search)

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