Perhaps you should try some spelling variations:
"coder string matching algorithms complex" » "coder string matching algorithm complex" (Expand search), "coder string mining algorithms complex" (Expand search), "coder string tracking algorithms complex" (Expand search), "coder string matching algorithms complexity" (Expand search), "coder string matching algorithm complexity" (Expand search), "coder string matching algorithms combined" (Expand search), "cordel string matching algorithms complex" (Expand search), "closed string matching algorithms complex" (Expand search), "modelo string matching algorithms complex" (Expand search)
"api citons python python programming" » "api pitons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pythons python python programming" (Expand search), "api citons pythons python programming" (Expand search), "api citons piton python programming" (Expand search), "api citons 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 matching algorithms complex") OR ("api citons python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder string matching algorithms complex\") OR (\"api citons python python programming\"))*".
• Removing quotes may allow a broader search: (( coder string matching algorithms complex ) OR ( api citons python python programming ))*.