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