Perhaps you should try some spelling variations:
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"
"trong dan code snippets" » "trong dang code snippets", "trong san code snippets", "trong tan code snippets", "trong dan de snippets"
"locating bug core snippets" » "locating bug code snippets"

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 slippers") OR ("trong dan code snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung java java slippers\") OR (\"trong dan code snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( dung java java slippers ) OR ( trong dan code snippets ))) OR ( locating bug core snippets ))*.