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