Perhaps you should try some spelling variations:
"coherent precoding using the complexity" » "coherent decoding using the complexity" (Expand search), "coherent coding using the complexity" (Expand search), "coherent breeding using the complexity" (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: (("coherent precoding using the complexity") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coherent precoding using the complexity\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coherent precoding using the complexity ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coherent precoding using the complexity") OR ("api python python python programming"))*.