Perhaps you should try some spelling variations:
"vai trong dan snippets" » "tai trong dan snippets", "bai trong dan snippets", "dai trong dan snippets", "vai trong dang snippets", "vai trong san snippets", "vai trong tan snippets", "vai trong dan slippers"
"using low java snippets" » "using low 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: (((("vai trong dan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vai trong dan snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vai trong dan snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vai trong dan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.