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