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