Perhaps you should try some spelling variations:
"dung viet hoang snippets" » "dung viet khoang snippets", "dung viet hang snippets", "dung viet hoan snippets", "nang viet hoang snippets", "cong viet hoang snippets", "mang viet hoang snippets", "dung viet hoang slippers"
"dung vbug code snippets" » "dung vung code snippets", "dung vbug code slippers", "dung vbung code snippets", "dung vbugs code snippets"
"locating bug code snippets" » "locating bug code slippers", "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 vbug code snippets") or ("dung viet hoang snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vbug code snippets") OR ("dung viet hoang snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vbug code snippets ) or ( dung viet hoang snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vbug code snippets") or ("dung viet hoang snippets"))) or ("locating bug code snippets"))*.