Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang dieu cac snippets" » "dang dieu can snippets", "dang hieu cac snippets", "dang dien cac snippets", "dan dieu cac snippets", "dong dieu cac snippets", "nang dieu cac 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: (((("dang dieu cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang dieu cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang dieu cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang dieu cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.