Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day nghe hoi snippets" » "dang nghe hoi snippets", "van nghe hoi snippets", "nam nghe hoi snippets", "day nghe hoa snippets", "day nghe noi snippets", "day nghe moi 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: (((("day nghe hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("day nghe hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day nghe hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day nghe hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.