Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java code snippets" » "using data code snippets"
"van toi hoc snippets" » "van tai hoc snippets", "van thi hoc snippets", "van toan hoc snippets", "van hoi hoc snippets", "van toc hoc snippets", "van tri hoc 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 ("van toi hoc snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van toi hoc snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van toi hoc snippets"))) or ("locating bugs code snippets"))*.