Perhaps you should try some spelling variations:
"coder centering mimo precoder program" » "coder centering mimo proder program" (Expand search), "coder centering mimo recovery program" (Expand search), "coder centering mimo precoce programa" (Expand search), "powder sintering mimo precoder program" (Expand search), "coder centering in precoder program" (Expand search), "coder centering tm precoder program" (Expand search), "coder centering semi precoder program" (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 centering mimo precoder program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder centering mimo precoder program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder centering mimo precoder program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder centering mimo precoder program") OR ("api python python python programming"))*.