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 cua code snippets" » "dung cho code snippets", "dung cua cong snippets", "dung cua co snippets", "dung cfd code snippets", "dung cua code slippers"
"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 cua 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 cua code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luan dat snippets ) or ( dung cua code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luan dat snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))*.