Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam do cua snippets" » "nam dao cua snippets", "nam doi cua snippets", "nam bo cua snippets", "nam co cua snippets", "nam de cua 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 do 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 do cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam do cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam do cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.