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