Perhaps you should try some spelling variations:
"coder coder x diffraction problem" » "coder coder x diffusion problem" (Expand search), "coder coder x bifurcation problem" (Expand search), "coder coder x interaction problem" (Expand search), "coder coder _ diffraction problem" (Expand search), "coder coder of diffraction problem" (Expand search), "coder coder xray diffraction problem" (Expand search), "coder decoder x diffraction problem" (Expand search), "code code x diffraction problem" (Expand search), "decoder codec x diffraction problem" (Expand search), "coder poder x diffraction problem" (Expand search), "coder powder x diffraction problem" (Expand search), "coder coders _ diffraction 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), "manim 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 x diffraction problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder x diffraction problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder x diffraction problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder x diffraction problem") OR ("api python python python programming"))*.