Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"dan hoi hoc snippets" » "dan hoc hoc snippets", "dai hoi hoc snippets", "dang khoi hoc snippets", "dan hoa hoc snippets", "dan khoa hoc snippets", "dan hoi chuc 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 ("dan hoi hoc snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dan hoi hoc snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dan hoi hoc snippets"))) or ("locating bug core snippets"))*.