Perhaps you should try some spelling variations:
"coder string matching algorithms complexity" » "coder string matching algorithmic complexity" (Expand search), "coder string matching algorithm complexity" (Expand search), "coder string mining algorithms complexity" (Expand search), "coder string tracking algorithms complexity" (Expand search), "cordel string matching algorithms complexity" (Expand search), "closed string matching algorithms complexity" (Expand search), "modelo string matching algorithms complexity" (Expand search)
"api piton pythons python programming" » "api piton python python programming" (Expand search), "api piton pitons python programming" (Expand search), "api piton piton python programming" (Expand search), "api pitons python python programming" (Expand search), "api python python python programming" (Expand search), "api python pythons 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 matching algorithms complexity\") OR (\"api piton pythons python programming\"))~".
• Removing quotes may allow a broader search: (( coder string matching algorithms complexity ) OR ( api piton pythons python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder string matching algorithms complexity") OR ("api piton pythons python programming"))*.