Perhaps you should try some spelling variations:
"coder coder can dirac problem" » "coder coder can direct problem" (Expand search), "coder decoder can dirac problem" (Expand search), "code code can dirac problem" (Expand search), "decoder codec can dirac problem" (Expand search), "coder poder can dirac problem" (Expand search), "coder code can dirac problem" (Expand search), "coder codes scan dirac problem" (Expand search), "coder coder and dirac problem" (Expand search), "coder coder on dirac problem" (Expand search), "coder coder can drag 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)

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 can dirac problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder can dirac problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder can dirac problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder can dirac problem") OR ("api python python python programming"))*.