Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc huu chau snippets" » "duc huu han snippets", "duc quy chau snippets", "duc huu nhu snippets", "duoc huu chau snippets", "duc hau chau snippets", "duc hue chau 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: (((("duc huu chau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc huu chau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc huu chau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc huu chau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.