Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dich mot cho snippets" » "tich mot cho snippets", "dinh moi cho snippets", "dich hoc cho snippets", "dich mo cho snippets", "dich moi cho snippets", "dich mot co 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: (((("dich mot 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: (((("dich mot cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dich mot cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dich mot cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.