Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam tang cua snippets" » "nam thang cua snippets", "nham tang cua snippets", "dam tang cua snippets", "nam mang cua snippets", "nam hang cua snippets", "nam tang luan 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: (((("nam tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam tang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam tang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.