Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung do danh snippets" » "dung doi danh snippets", "dung co danh snippets", "dung de danh snippets", "dung do dinh snippets", "dung do sanh snippets", "dung dia danh snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") OR ("dung do danh snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java code snippets\") OR (\"dung do danh snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung do danh snippets ))) OR ( locating bug core snippets ))*.