Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan huy den snippets" » "phan tu den snippets", "phan xay den snippets", "van huy den snippets", "phan huy dien snippets", "phan thuy den snippets", "phan duy den snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 huy den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan huy den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan huy den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan huy den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.