Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuat nhat de snippets" » "xuat nhap de snippets", "xuat khau de snippets", "xuan nhan de snippets", "xuat nhat ve snippets", "xuat nhat le snippets", "xuat chat deo 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 nhat 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 nhat de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuat nhat de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuat nhat de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.