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