Perhaps you should try some spelling variations:
"coder coder teaching sequence on" » "coder code teaching sequence on" (Expand search), "coder poder teaching sequence on" (Expand search), "coder model teaching sequence on" (Expand search), "coder decoder teaching sequence on" (Expand search), "code code teaching sequence on" (Expand search), "decoder codec teaching sequence on" (Expand search), "coder coder teaching sequence of" (Expand search), "coder coder teaching sequence and" (Expand search), "coder coder teaching sequence _" (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)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder teaching sequence on") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder teaching sequence on\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder teaching sequence on ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder teaching sequence on") OR ("api python python python programming"))*.