Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"danh bat cong snippets" » "doanh bat cong snippets", "anh bai cong snippets", "dinh ba cong snippets", "danh bat dong snippets", "danh ban cong snippets", "danh bot cong 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: (((("danh bat cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh bat cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh bat cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh bat cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.