Perhaps you should try some spelling variations:
"cong doan thuc slippers" » "cong dan thuc slippers", "cong hoan thuc slippers", "dong doanh thuc slippers", "cong doanh thuc slippers", "cong toan thuc slippers", "cong doan thuc slippery", "cong doan thuc 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 doan thuc 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 doan thuc slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong doan thuc slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong doan thuc slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.