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)
"and application in welcoming program" » "and application in teaching program" (Expand search), "and application in mentoring program" (Expand search), "and application in welcome programs" (Expand search), "and application and welcoming program" (Expand search), "and application _ welcoming program" (Expand search), "and application of welcoming program" (Expand search)

You may be able to get more results by adjusting your search query.

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