Perhaps you should try some spelling variations:
"dan rate code snippets" » "dan dat code snippets", "dan lat code snippets", "dan vat code snippets", "dan rate core snippets"
"dung luan de snippets" » "dung luan den snippets", "dung luan ve snippets", "dung luat de snippets"
"locating bug code snippets" » "locating bug core snippets", "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: (((("dan rate code snippets") or ("dung luan de snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan rate code snippets") OR ("dung luan de snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan rate code snippets ) or ( dung luan de snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan rate code snippets") or ("dung luan de snippets"))) or ("locating bug code snippets"))*.