Perhaps you should try some spelling variations:
"trac trung thi snippets" » "tran trung thi snippets", "tai trung thi snippets", "tac trong thi snippets", "trac truong thi snippets", "trac trong thi snippets", "trac trung tri snippets", "trac trung thi slippers"
"dung va java snippets" » "dung java java snippets", "dung va java slippers"
"locating bug code snippets" » "locating bug code slippers", "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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("trac trung thi snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trac trung thi snippets") OR ("dung va java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( trac trung thi snippets ) or ( dung va java snippets ))) or ( locating bug code snippets ))*.