Perhaps you should try some spelling variations:
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"
"luong duc co snippets" » "duong duc co snippets", "luong cuoc co snippets", "luong dich co snippets", "luong duoc co snippets", "luong duc con snippets", "luong tuc co snippets"
"locating bug code snippets" » "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 using java snippets\") OR (\"luong duc co snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung using java snippets ) OR ( luong duc co snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung using java snippets") OR ("luong duc co snippets"))) OR ("locating bug code snippets"))*.