Perhaps you should try some spelling variations:
"dung ngu java snippets" » "dung nga java snippets", "dung ngo java snippets", "dung nguoi java snippets", "dung ngu va snippets"
"dung san co snippets" » "dong san co snippets", "dung sai co snippets", "dung luan co snippets", "dung ban co snippets", "dung sang cho 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: (((("dung ngu java snippets") or ("dung san co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ngu java snippets") OR ("dung san co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ngu java snippets ) or ( dung san co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ngu java snippets") or ("dung san co snippets"))) or ("locating bug code snippets"))*.