Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"doi cua hieu snippets" » "doi cua chieu snippets", "doi cua dieu snippets", "doi cuu hieu snippets", "hoi cua hieu snippets", "dai cua hieu snippets", "dong cua hieu 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 cua hieu snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doi cua hieu snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doi cua hieu snippets"))) or ("locating bug core snippets"))*.