Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hay nhat do snippets" » "pham nhat do snippets", "hat nhan do snippets", "dai nhat do snippets", "hay nhat so snippets", "hay nhat de snippets", "hay hat do 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: (((("hay nhat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hay nhat do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hay nhat do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hay nhat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.