Perhaps you should try some spelling variations:
"ba trung cao snippets" » "ba truong cao snippets", "ba trung cap snippets", "ba trung co snippets", "tai trung cao snippets", "nam trung cao snippets", "do trung cao snippets"
"using a java snippets" » "using _ java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("ba trung cao snippets") OR ("using a java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( ba trung cao snippets ) or ( using a java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("ba trung cao snippets") or ("using a java snippets"))) or ("locating bug code snippets"))*.