Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"dai cong code snippets" » "dai cong cong snippets", "dai cong co snippets", "dai cong che snippets", "dai cuong code snippets", "tai cong code snippets", "doi cong code snippets"
"locating bug core snippets" » "locating bug code snippets"

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

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