Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban chan den snippets" » "dan chan den snippets", "ban than den snippets", "ban nhan den snippets", "ban cham den snippets", "ban chen den snippets", "ban chan doan 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: (((("ban chan 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: (((("ban chan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban chan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban chan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.