Perhaps you should try some spelling variations:
"cong trinh code snippets" » "cong trinh cong snippets", "cong trinh co snippets", "cong trinh cad snippets", "cong trinh code slippers"
"dung dinh dat snippets" » "dang dinh dat snippets", "dung dich dat snippets", "dung ninh dat snippets", "dung dinh ket snippets", "dung dinh van snippets", "dung dinh lam snippets", "dung dinh dat 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 dinh dat snippets") or ("cong trinh code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dinh dat snippets") OR ("cong trinh code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dinh dat snippets ) or ( cong trinh code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dinh dat snippets") or ("cong trinh code snippets"))) or ("locating bug code snippets"))*.