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