Perhaps you should try some spelling variations:
"coder coder photon counting problems" » "coder coder photon routing problems" (Expand search), "coder coder photon cutting problems" (Expand search), "coder coder photon routing problem" (Expand search), "coder one photon counting problems" (Expand search), "coder or photon counting problems" (Expand search), "coder over photo counting problems" (Expand search), "coder decoder photon counting problems" (Expand search), "code code photon counting problems" (Expand search), "decoder codec photon counting problems" (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 photon counting problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder photon counting problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder photon counting problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder photon counting problems") OR ("api python python python programming"))*.