Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung san danh slippers" » "dong san danh slippers", "dung sai danh slippers", "dung luan danh slippers", "dung san doanh slippers", "dung van danh slippers", "dung han danh slippers", "dung san danh slippery", "dung san 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 san 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 san danh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung san danh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung san danh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.