Perhaps you should try some spelling variations:
"dung vian code snippets" » "dung van code snippets", "dung vien code snippets", "dung va code snippets"
"duong ma code slippers" » "duong va code slippers", "cuong ma code slippers", "duong manh code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung vian code snippets") or ("duong ma code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vian code snippets") OR ("duong ma code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vian code snippets ) or ( duong ma code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vian code snippets") or ("duong ma code slippers"))) or ("locating bug code snippets"))*.