Perhaps you should try some spelling variations:
"dung nhung dat snippets" » "dung chung dat snippets", "dung nhan dat snippets", "dung trung dat snippets", "dung nhung hat snippets", "dung nhung phat snippets", "dung nhung danh snippets", "dung nhung dat slippers"
"using _ code snippets" » "using _ 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: (((("using _ code snippets") or ("dung nhung dat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using _ code snippets") OR ("dung nhung dat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using _ code snippets ) or ( dung nhung dat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using _ code snippets") or ("dung nhung dat snippets"))) or ("locating bug code snippets"))*.