Perhaps you should try some spelling variations:
"tong cot hat snippets" » "tong cong hat snippets", "tong hop hat snippets", "dong co hat snippets", "tong cot hat slippers", "tong cot nhat snippets", "tong cot phat snippets", "tong cot chat snippets"
"dung va java snippets" » "dung java java snippets", "dung va java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 va java snippets") or ("tong cot hat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung va java snippets") OR ("tong cot hat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung va java snippets ) or ( tong cot hat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung va java snippets") or ("tong cot hat snippets"))) or ("locating bug code snippets"))*.