Perhaps you should try some spelling variations:
"cong luan trac slippers" » "tong luan trac slippers", "cong tuan trac slippers", "dong luan trac slippers", "cong luan tac slippers", "cong luan tranh slippers", "cong luan thuc slippers", "cong luan trac slippery", "cong luan 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: (((("cong luan 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: (((("cong luan trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong luan trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong luan trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.