Perhaps you should try some spelling variations:
"coder coder number density problem" » "coder coder number identity problem" (Expand search), "coder coder number density probes" (Expand search), "coder coder number dentistry problem" (Expand search), "coder cover number density problem" (Expand search), "coder codes numbers density problem" (Expand search), "coder over number density problem" (Expand search), "coder decoder number density problem" (Expand search), "code code number density problem" (Expand search), "decoder codec number density 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 number density problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder number density problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder number density problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder number density problem") OR ("api python python python programming"))*.