Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan bai du snippets" » "phan ba du snippets", "phan dai du snippets", "phan bac du snippets", "phan tai du snippets", "phan bai da snippets", "phan bai tu 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 bai du 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 bai du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan bai du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan bai du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.