Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan duc vo snippets" » "pham duc vo snippets", "phan tu vo snippets", "phan dau vo snippets", "phan duoc vo snippets", "phan duc va snippets", "phan duc mo 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 duc vo 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 duc vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan duc vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.