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