Perhaps you should try some spelling variations:
"van duong tran snippets" » "van huong tran snippets", "van duong tan snippets", "van duong tuan snippets", "van dong tran snippets", "van dung tran snippets", "van phong tran snippets", "van duong tran slippers"
"using java java snippets" » "using data java snippets", "using java 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: (((("van duong tran snippets") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van duong tran snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van duong tran snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van duong tran snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.