Perhaps you should try some spelling variations:
"dao vung code snippets" » "dao vung co snippets", "dan vung code snippets", "dao cuong code snippets", "dao van code snippets", "dao vung code slippers"
"dong dat code snippets" » "dong vat code snippets", "dung dat code snippets", "dong ha code snippets", "dong rate code snippets", "dong dat de snippets", "dong dat code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("dong dat code snippets") or ("dao vung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong dat code snippets") OR ("dao vung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong dat code snippets ) or ( dao vung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dat code snippets") or ("dao vung code snippets"))) or ("locating bug code snippets"))*.