Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"dai dung code snippets" » "dai dung cong snippets", "dai dung co snippets", "dai dung de snippets", "dai duong code snippets", "dan dung code snippets", "mai dung code snippets"
"locating bug core snippets" » "locating bug code 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: "((((\"using java java snippets\") OR (\"dai dung code snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java java snippets ) OR ( dai dung code snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") OR ("dai dung code snippets"))) OR ("locating bug core snippets"))*.