Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan dien cho snippets" » "doan dien cho snippets", "danh dien cho snippets", "dan den cho snippets", "dan dien khoa snippets", "dan trien cho snippets", "dan dien hoa 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: (((("dan dien cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan dien cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan dien cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan dien cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.