Perhaps you should try some spelling variations:
"dung danh kem slippers" » "dung doanh kem slippers", "dung dan kem slippers", "dung dang kem slippers", "dung hanh kem slippers", "dung banh kem slippers", "dung danh kien slippers", "dung danh kem slippery", "dung danh kem 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: (((("dung danh kem slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung danh kem slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung danh kem slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung danh kem slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.