Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan cau den snippets" » "toan cao den snippets", "toan ban den snippets", "toan tap den snippets", "toan cap den snippets", "toan cau de snippets", "toan hau 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: (((("toan cau 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: (((("toan cau den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan cau den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan cau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.