Perhaps you should try some spelling variations:
"dang java java snippets" » "dang va java snippets"
"dang hung ca snippets" » "dang quang ca snippets", "manh hung ca snippets", "dang cong ca snippets", "dang nhung ca snippets", "dang hang ca snippets", "dang hung ha 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 java java snippets") or ("dang hung ca snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("dang hung ca snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( dang hung ca snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("dang hung ca snippets"))) or ("locating bug code snippets"))*.