Perhaps you should try some spelling variations:
"coder string tree algorithm complexity" » "coder string tree algorithms complexity" (Expand search), "coder string tree algorithmic complexity" (Expand search), "coder string tree algorithm context" (Expand search), "coder string the algorithm complexity" (Expand search), "coder string greedy algorithm complexity" (Expand search), "cordel string tree algorithm complexity" (Expand search), "closed string tree algorithm complexity" (Expand search), "modelo string tree algorithm 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: (("coder string tree algorithm complexity") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder string tree algorithm complexity\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder string tree algorithm complexity ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder string tree algorithm complexity") OR ("api python python python programming"))*.