Perhaps you should try some spelling variations:
"coder coder theory routines problem" » "coder coder theory routing problem" (Expand search), "coder coder theory routine problems" (Expand search), "coder coder theory routes problem" (Expand search), "coder coder the routines problem" (Expand search), "coder code theory routines problem" (Expand search), "coder codes theory routines problem" (Expand search), "coder modern theory routines problem" (Expand search), "coder decoder theory routines problem" (Expand search), "code code theory routines problem" (Expand search), "decoder codec theory routines 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder theory routines problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder theory routines problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder theory routines problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder theory routines problem") OR ("api python python python programming"))*.