Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan cho den snippets" » "toan cao den snippets", "toan chi den snippets", "toan ho den snippets", "toan cho dong snippets", "toan cham den snippets", "toan chen 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 cho 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 cho den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan cho den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan cho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.