Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cao cu snippets" » "nam sao cu snippets", "nam giao cu snippets", "nam cao chu snippets", "nam tao cu snippets", "nam cao su 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 cao cu 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 cao cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cao cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cao cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.