Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan doc den snippets" » "phan duoc den snippets", "phan duc den snippets", "than doc den snippets", "phan don den snippets", "phan duoc dien snippets", "phan doc benh 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 doc 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 doc den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan doc den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan doc den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.