Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan duc f grippers" » "phan duc soft grippers", "pham duc f grippers", "phan tu f grippers", "phan dau f grippers", "phan duc _ grippers", "phan duc m grippers", "phan duc y grippers"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phan duc f grippers") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"phan duc f grippers\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( phan duc f grippers ) OR ( python using java snippets ))) OR ( locating bug core snippets ))*.