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