Perhaps you should try some spelling variations:
"luan trinh han snippets" » "xuan trinh han snippets", "luan tinh han snippets", "luan tranh han snippets", "luan trinh quan snippets", "luan trinh han 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 (\"luan trinh han snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( luan trinh han snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("luan trinh han snippets"))) OR ("locating bug code snippets"))*.