Perhaps you should try some spelling variations:
"dong phuc trong slippers" » "dong thuc trong slippers", "dong chuc trong slippers", "dong thuoc trong slippers", "duong phuc trong slippers", "dong phu trong slippers", "dong phuc trong slippery", "dong phuc 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 phuc 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 phuc trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong phuc trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong phuc trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.