Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung tieu du snippets" » "dung hieu du snippets", "dung tren du snippets", "dung tin du snippets", "dung tieu su snippets", "dung tiep du snippets", "dung tieu dung 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: (((("dung tieu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tieu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tieu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tieu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.