Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java grippers" » "python using data grippers"
"phan duc han slippers" » "pham duc han slippers", "phan tu han slippers", "phan dau han slippers", "phan duc phan slippers", "phan duc hanh slippers", "phan duc hoan slippers", "phan duc han slippery"

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 han slippers") or ("python using java grippers"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan duc han slippers") OR ("python using java grippers"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan duc han slippers ) or ( python using java grippers ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duc han slippers") or ("python using java grippers"))) or ("locating bug core snippets"))*.