Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"dan cua chan snippets" » "dan cua nhan snippets", "dan cua can snippets", "dan cua cha snippets", "dan ca chan snippets", "ban cua chan snippets", "dai cua chan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("dan cua chan snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( dan cua chan snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("dan cua chan snippets"))) or ("locating bug code snippets"))*.