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