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