Perhaps you should try some spelling variations:
"dong vat code snippets" » "dong va code snippets", "dong von code snippets", "dong ha code snippets", "dong rate code snippets", "dong vat co snippets", "dong vat de snippets", "dong vat code slippers"
"dung tu trinh snippets" » "dung tu tinh snippets", "dung tieu trinh snippets", "dung qua trinh snippets", "dung thu trinh snippets", "dung tru trinh snippets", "dung cu trinh snippets", "dung tu trinh slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

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