Perhaps you should try some spelling variations:
"coder the complexity abc program" » "coder the complexity and program" (Expand search), "coder the complexity an program" (Expand search), "coder the complexity at program" (Expand search), "code the complexity abc program" (Expand search), "cover the complexity abc program" (Expand search), "poder the complexity abc program" (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 the complexity abc program\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder the complexity abc program ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder the complexity abc program") OR ("api python python python programming"))*.