Perhaps you should try some spelling variations:
"huong tran viet snippets" » "huong dan viet snippets", "quang tran viet snippets", "chuong trinh viet snippets", "huong trien viet snippets", "huong gian viet snippets", "huong san viet snippets", "huong tran viet slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("huong tran viet snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huong tran viet snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong tran viet snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong tran viet snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.