Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using tra cong snippets" » "using a cong snippets", "using two cong snippets", "using pre cong snippets", "using tran cong snippets", "using trao cong snippets", "using trang cong snippets"
"dung va java snippets" » "dung java java snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using tra cong snippets") or ("dung va java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using tra cong snippets") OR ("dung va java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using tra cong snippets ) or ( dung va java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using tra cong snippets") or ("dung va java snippets"))) or ("locating bugs code snippets"))*.