Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cung cac cau snippets" » "cuong cac cau snippets", "cung cap cau snippets", "dung cac cau snippets", "cung cac mau snippets", "cung bac cau snippets", "cung ca cau 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 java java snippets") or ("cung cac cau snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("cung cac cau snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cung cac cau snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cung cac cau snippets"))) or ("locating bug code snippets"))*.