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