Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan duy con snippets" » "pham duy con snippets", "phan huy con snippets", "phan duc con snippets", "phan day con snippets", "phan duy can 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 duy con 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 duy con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan duy con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duy con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.