Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan duc du snippets" » "phan duc code snippets", "pham duc du snippets", "phan tu du snippets", "phan dau du snippets", "phan duc duy snippets", "phan cuc du snippets", "phan duc tu snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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