Perhaps you should try some spelling variations:
"coder implementation of precoder problem" » "code implementation of precoder problem" (Expand search), "decoder implementation of precoder problem" (Expand search), "model implementation of precoder problem" (Expand search), "coder implementation of recovery problem" (Expand search), "coder implementation of precoces problemas" (Expand search), "coder implementation of cover problem" (Expand search), "coder implementation of precoded problem" (Expand search), "coder implementation of premodern problem" (Expand search), "coder implementation to precoder 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 implementation of precoder problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder implementation of precoder problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder implementation of precoder problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder implementation of precoder problem") OR ("api python python python programming"))*.