Perhaps you should try some spelling variations:
"xuat vat code snippets" » "xuat va code snippets", "xuat vac code snippets", "thuat vat code snippets", "xuat rate code snippets", "xuat vat co snippets", "xuat vat de snippets", "xuat vat code slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers"
"locating bug code snippets" » "locating bug code slippers"

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 vat code snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuat vat code snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuat vat code snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuat vat code snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.