Perhaps you should try some spelling variations:
"phan trong cot snippets" » "pham trong cot snippets", "nhan trong cot snippets", "phan tong cot snippets", "phan trong co snippets", "phan trong mot 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: (((("phan trong 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: (((("phan trong cot snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan trong cot snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan trong cot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.