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