Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban dang son snippets" » "ban hang son snippets", "ban dan son snippets", "van dang son snippets", "ban lang son snippets", "ban dong son snippets", "ban bang son 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 dang son 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 dang son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban dang son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban dang son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.