Perhaps you should try some spelling variations:
"tran danh bat slippers" » "tran dinh bat slippers", "tran manh bat slippers", "tran dang bat slippers", "tran doanh bat slippers", "tran anh bai slippers", "tran dinh ba slippers", "tran danh bat slippery", "tran danh bat grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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: (((("tran danh bat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran danh bat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran danh bat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran danh bat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.