Perhaps you should try some spelling variations:
"vi ung data snippets" » "vi using data snippets", "vi dung dat snippets", "vi big data snippets", "va ung data snippets", "vi luong data snippets", "vi trung data snippets", "vi ung data 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: (((("vi ung data snippets") or ("using low java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vi ung data snippets") OR ("using low java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( vi ung data snippets ) or ( using low java snippets ))) or ( locating bug code snippets ))*.