Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban den hoan snippets" » "ban de hoan snippets", "ban dien hoat snippets", "ban dien hoa snippets", "ban dan hoan snippets", "quan den hoan 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 den hoan 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 den hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban den hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban den hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.