Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ben viet chu snippets" » "bien viet chu snippets", "ban viet chu snippets", "dien viet chu snippets", "ben viet chau snippets", "ben viet cho snippets", "ben viet cau 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: (((("ben viet chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ben viet chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ben viet chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ben viet chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.