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