Perhaps you should try some spelling variations:
"dung trong code snippets" » "dung trong cong snippets", "dung trong co snippets", "dung trong che snippets", "dung trong code slippers"
"dong da data snippets" » "dong dat data snippets", "dong dao data snippets", "dong ha data snippets", "dong a data snippets", "dong da data 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: (((("dung trong code snippets") or ("dong da data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung trong code snippets") OR ("dong da data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung trong code snippets ) or ( dong da data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung trong code snippets") or ("dong da data snippets"))) or ("locating bug code snippets"))*.