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