Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam ho chieu snippets" » "nam theo chieu snippets", "nam hoc thieu snippets", "nam doi chieu snippets", "nam hoi chieu snippets", "nam cho chieu snippets", "nam hon chieu 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 ho chieu 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 ho chieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam ho chieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam ho chieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.