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