Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thap va du snippets" » "tap va du snippets", "phap va du snippets", "thai va du snippets", "thap va dau snippets", "thap va su snippets", "thap va tu 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: (((("thap va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thap va du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thap va du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thap va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.