Perhaps you should try some spelling variations:
"cong cua trong slippers" » "cong cua truong slippers", "cong cua trung slippers", "cong qua trong slippers", "cong cu trong slippers", "dong cua trong slippers", "huong cua trong slippers", "cong cua trong slippery", "cong cua trong 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 cua trong 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 cua trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cua trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cua trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.