Perhaps you should try some spelling variations:
"dong vat da snippets" » "dong va da snippets", "dong von da snippets", "dong ha da snippets", "dong vat va snippets", "dong vat de snippets"
"dung dataon code snippets" » "dung dataon core snippets"
"locating bug code snippets" » "locating bug core snippets", "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: (((("dong vat da snippets") or ("dung dataon code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong vat da snippets") OR ("dung dataon code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong vat da snippets ) or ( dung dataon code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong vat da snippets") or ("dung dataon code snippets"))) or ("locating bug code snippets"))*.