Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luan van hue snippets" » "luan van code snippets", "luan van thue snippets", "luan van hoe snippets", "luan van huy snippets", "quan van hue snippets", "lan van hue snippets"
"dung java java snippets" » "dung va java 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 van hue snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( luan van hue snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("luan van hue snippets"))) OR ("locating bug core snippets"))*.