Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan huu du snippets" » "phan huu code snippets", "pham huu du snippets", "phan huy du snippets", "phan hieu du snippets", "phan huu duc snippets", "phan hut du snippets", "phan cuu du 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 huu 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 huu du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan huu du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan huu du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.