Perhaps you should try some spelling variations:
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java snippets", "using data java slippers"
"van tong luan snippets" » "van tang luan snippets", "van dung luan snippets", "van hang luan snippets", "van thong luan snippets", "van trong luan snippets", "van tuong luan snippets", "van tong luan 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 tong luan snippets") or ("using data java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van tong luan snippets") OR ("using data java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van tong luan snippets ) or ( using data java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tong luan snippets") or ("using data java snippets"))) or ("locating bug code snippets"))*.