Perhaps you should try some spelling variations:
"coder decoder coding source problem" » "coder decoder codecs source problem" (Expand search), "coder decoder using source problem" (Expand search), "coder decoder codec source problem" (Expand search), "coder decoder coding source problems" (Expand search), "encoder decoder coding source problem" (Expand search), "coder decoder curing source problem" (Expand search), "coder decoder moving source problem" (Expand search), "coder decoder founding source 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.

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