Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"han hoc can snippets" » "nhan hoc can snippets", "than hoc can snippets", "van hoc can snippets", "han hoc dan snippets", "han hoc cao snippets", "han hoc cac 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 ("han hoc can snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( han hoc can snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("han hoc can snippets"))) or ("locating bug core snippets"))*.