Perhaps you should try some spelling variations:
"coder string teaching algorithms complexity" » "coder string teaching algorithmic complexity" (Expand search), "coder string tracking algorithms complexity" (Expand search), "coder string learning algorithms complexity" (Expand search), "coder string matching algorithms complexity" (Expand search), "coder during teaching algorithms complexity" (Expand search), "coder tutoring teaching algorithms complexity" (Expand search), "coder nursing teaching algorithms complexity" (Expand search), "cordel string teaching algorithms complexity" (Expand search), "closed string teaching algorithms complexity" (Expand search), "modelo string teaching algorithms complexity" (Expand search)
"api _ python python programming" » "api _ pythons python programming" (Expand search), "api _ piton python programming" (Expand search), "api _ pitons 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 string teaching algorithms complexity") OR ("api _ python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder string teaching algorithms complexity\") OR (\"api _ python python programming\"))".
• Removing quotes may allow a broader search: (( coder string teaching algorithms complexity ) OR ( api _ python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder string teaching algorithms complexity") OR ("api _ python python programming"))*.