Perhaps you should try some spelling variations:
"trang trinh hoi snippets" » "tra trinh hoi snippets", "trang tri hoi snippets", "thanh trinh hoi snippets", "trang trinh hoa snippets", "trang trinh do snippets", "trang trinh han snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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