Perhaps you should try some spelling variations:
"coder code and visualization theory" » "coder code and virtualization theory" (Expand search), "coder code and visualization the" (Expand search), "coder code and visualization through" (Expand search), "coder code data visualization theory" (Expand search), "code code and visualization theory" (Expand search), "modern code and visualization theory" (Expand search), "color code and visualization theory" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (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: "((\"coder code and visualization theory\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder code and visualization theory ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder code and visualization theory") OR ("api python python python programming"))*.