Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang mau chap snippets" » "dong mau chap snippets", "dang van chap snippets", "dang su chap snippets", "dang cau chap snippets", "dang mau chan snippets", "dang mau cau 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 mau chap 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 mau chap snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang mau chap snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang mau chap snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.