Perhaps you should try some spelling variations:
"dung nguon danh slippers" » "dung nguoi danh slippers", "luong nguon danh slippers", "dung ngan danh slippers", "dung nguyen danh slippers", "dung nguong dan slippers", "dung nguoi dan slippers", "dung nguon danh slippery", "dung nguon danh 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: (((("dung java java snippets") or ("dung nguon danh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung nguon danh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung nguon danh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung nguon danh slippers"))) or ("locating bug code snippets"))*.