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