Perhaps you should try some spelling variations:
"dang trong mach slippers" » "dung trong mach slippers", "dong trong mach slippers", "lang trong mach slippers", "dang trong cac slippers", "dang trong minh slippers", "dang trong anh slippers", "dang trong mach slippery", "dang trong mach 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: (((("dang trong mach slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang trong mach slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang trong mach slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang trong mach slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.