Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hung tuan cau snippets" » "hung tran cau snippets", "quang tuan cau snippets", "trung tuan cau snippets", "hung toan cau snippets", "hung quan cau snippets", "hung tuan cu 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 java java snippets") or ("hung tuan cau snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("hung tuan cau snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( hung tuan cau snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("hung tuan cau snippets"))) or ("locating bug code snippets"))*.