Perhaps you should try some spelling variations:
"dung phan cung snippets" » "dung nhan cung snippets", "dung luan cung snippets", "dung ha cung snippets", "dung phan cong snippets", "dung phan ung snippets", "dung phan xuong 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: (((("dung phan cung snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phan cung snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phan cung snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phan cung snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.