Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuat phan de snippets" » "thuat phan de snippets", "xuat nhap de snippets", "luan phan de snippets", "xuat phan le snippets", "xuat phan ve snippets", "xuat phan do 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: (((("xuat phan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuat phan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuat phan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuat phan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.