Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"anh dung do snippets" » "anh dong do snippets", "anh huong do snippets", "sach dung do snippets", "anh dung doi snippets", "anh dung co snippets", "anh dung de 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 dung do 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 dung do snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh dung do snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh dung do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.