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