Perhaps you should try some spelling variations:
"dong trinh dan snippets" » "cong trinh dan snippets", "dong tinh dan snippets", "dong tranh dan snippets", "dong trinh han snippets", "dong trinh van snippets", "dong trinh san snippets", "dong trinh dan slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung java java snippets\") OR (\"dong trinh dan snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( dong trinh dan snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("dong trinh dan snippets"))) OR ("locating bug code snippets"))*.