Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan bia den snippets" » "phan ba den snippets", "phan giai den snippets", "phan bien den snippets", "phan bia tien snippets", "phan biet den snippets", "phan giay den 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 bia den 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 bia den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan bia den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan bia den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.