Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"cong li doan snippets" » "cong ti doan snippets", "hong li doan snippets", "cong hai doan snippets", "cong le doan snippets", "cong lai doanh snippets", "cong ly doanh 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 code snippets") OR ("cong li doan snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cong li doan snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cong li doan snippets"))) or ("locating bug core snippets"))*.