Perhaps you should try some spelling variations:
"poder _ implementing discrete precoding" » "poder _ implementacao discreta precoding" (Expand search), "poder _ implementing safety precoding" (Expand search), "poder _ implementing free precoding" (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), "manim 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: (("poder _ implementing discrete precoding") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"poder _ implementing discrete precoding\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( poder _ implementing discrete precoding ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("poder _ implementing discrete precoding") OR ("api python python python programming"))*.