Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java code snippets" » "using data code snippets"
"luan san hoc snippets" » "luan van hoc snippets", "luan hoan hoc snippets", "luan phan hoc snippets", "luan dan hoc snippets", "luan san ho 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 ("luan san hoc snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( luan san hoc snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("luan san hoc snippets"))) or ("locating bugs code snippets"))*.