Perhaps you should try some spelling variations:
"code code precoder sample problem" » "code code precoder complex problem" (Expand search), "code code precoder same problems" (Expand search), "code code precedent sample problem" (Expand search), "code coder decoder sample problem" (Expand search), "code to precoder sample problem" (Expand search), "code cdc precoder sample problem" (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: (("code code precoder sample problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code code precoder sample problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( code code precoder sample problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("code code precoder sample problem") OR ("api python python python programming"))*.