Perhaps you should try some spelling variations:
"dan cac nhan snippets" » "dan ca nhan snippets", "dan cac nha snippets", "dan cam nhan snippets", "dan cach nhan snippets", "dang cac nhan snippets", "dan cac nhan slippers"
"dung va java snippets" » "dung java java snippets", "dung va java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 cac nhan snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan cac nhan snippets") OR ("dung va java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cac nhan snippets ) or ( dung va java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cac nhan snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))*.