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