Perhaps you should try some spelling variations:
"dung cau trong slippers" » "dung cau truong slippers", "dung cay trong slippers", "dung chu trong slippers", "dung chau trong slippers", "dung cu trong slippers", "dung cac trong slippers", "dung cau trong slippery", "dung cau trong grippers"
"hang java java snippets" » "hang 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: (((("dung cau trong slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cau trong slippers") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cau trong slippers ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cau trong slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))*.