Perhaps you should try some spelling variations:
"coder introduction to using problem" » "cholera introduction to using problem" (Expand search), "contra introduction to using problem" (Expand search), "after introduction to using problem" (Expand search), "coder introduction to housing problems" (Expand search), "coder introduction to routing problem" (Expand search), "coder introduction to cutting problem" (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 introduction to using problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder introduction to using problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder introduction to using problem") OR ("api python python python programming"))*.