Perhaps you should try some spelling variations:
"an introduction vba code programming" » "an introduction by code programming" (Expand search), "an introduction la code programming" (Expand search), "an introduction usa code programming" (Expand search), "an introduction vba cone programming" (Expand search), "an introduction vba core programming" (Expand search), "an introduction vba co programming" (Expand search), "an introduction bar code programming" (Expand search), "an introduction be code programming" (Expand search), "an introduction vba code programaming" (Expand search)
"advanced python python computer program" » "advanced method python computer program" (Expand search), "advanced path python computer program" (Expand search), "advanced symphony python computer program" (Expand search), "advanced pythons python computer program" (Expand search), "advanced piton python computer program" (Expand search), "advanced pitons python computer program" (Expand search), "advanced python python computer programa" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("an introduction vba code programming") OR ("advanced python python computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"an introduction vba code programming\") OR (\"advanced python python computer program\"))".
• Removing quotes may allow a broader search: (( an introduction vba code programming ) OR ( advanced python python computer program )).
• Adding a wildcard symbol may retrieve word variants: (("an introduction vba code programming") OR ("advanced python python computer program"))*.