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