Perhaps you should try some spelling variations:
"dung luan dat snippets" » "dung luat dat snippets", "dung luan dac snippets", "dung luan day snippets", "dung luan dat slippers"
"dung vbugs code snippets" » "dung vbugs code slippers", "dung vbungs code snippets", "dung vbugss code snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 luan dat snippets") or ("dung vbugs code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung luan dat snippets") OR ("dung vbugs code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luan dat snippets ) or ( dung vbugs code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luan dat snippets") or ("dung vbugs code snippets"))) or ("locating bug code snippets"))*.