Perhaps you should try some spelling variations:
"nham using java snippets" » "nham ung java snippets", "nham using data snippets"
"dung cong cong snippets" » "dung trong cong snippets", "dung cong dong snippets", "dung dang cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung cong cong snippets") or ("nham using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cong cong snippets") OR ("nham using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cong cong snippets ) or ( nham using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cong cong snippets") or ("nham using java snippets"))) or ("locating bug code snippets"))*.