Perhaps you should try some spelling variations:
"trinh thue hoi snippets" » "trinh thuc hoi snippets", "tinh thue hoi snippets", "trinh thuy hoi snippets", "trinh thu hoi snippets", "trinh thue hai snippets", "trinh phuc hoi snippets"
"dung va java snippets" » "dung java 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: (((("dung va java snippets") or ("trinh thue hoi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung va java snippets") OR ("trinh thue hoi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung va java snippets ) or ( trinh thue hoi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung va java snippets") or ("trinh thue hoi snippets"))) or ("locating bug code snippets"))*.