Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"doi cau cong snippets" » "doi cac cong snippets", "doi cuu cong snippets", "doi cao cong snippets", "doi dau cong snippets", "di cau cong snippets", "doi ca cong snippets"
"locating bug core snippets" » "locating bug 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 code snippets") OR ("doi cau cong snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doi cau cong snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doi cau cong snippets"))) or ("locating bug core snippets"))*.