Perhaps you should try some spelling variations:
"coder encodes mimo precoder program" » "coder encodes mimo proder program" (Expand search), "coder encodes mimo recovery program" (Expand search), "coder encodes mimo precoce programa" (Expand search), "coder decoder mimo precoder program" (Expand search), "coder codes mimo precoder program" (Expand search), "coder encodes two precoder program" (Expand search), "coder encoded time 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.

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