Perhaps you should try some spelling variations:
"coder case complexity in problem" » "coder the complexity in problem" (Expand search), "coder and complexity in problem" (Expand search), "coder case complexity and problem" (Expand search), "border case complexity in problem" (Expand search), "power case complexity in problem" (Expand search), "lower case complexity in 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 case complexity in problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder case complexity in problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder case complexity in problem") OR ("api python python python programming"))*.