Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung cao danh slippers" » "duong cao danh slippers", "dung cho danh slippers", "dung co danh slippers", "dung cao dang slippers", "dung cao anh slippers", "dung cau danh slippers", "dung cao danh slippery", "dung cao 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 cao 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 cao danh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cao danh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cao danh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.