Perhaps you should try some spelling variations:
"coder string machine algorithm complexity" » "coder string machine algorithms complexity" (Expand search), "coder string machine algorithmic complexity" (Expand search), "coder string matching algorithm complexity" (Expand search), "coder string teaching algorithms complexity" (Expand search), "coder string exchange algorithm complexity" (Expand search), "coder suturing machine algorithm complexity" (Expand search), "coder scoring machine algorithm complexity" (Expand search), "cordel string machine algorithm complexity" (Expand search), "closed string machine algorithm complexity" (Expand search), "modelo string machine algorithm 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.

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