Perhaps you should try some spelling variations:
"vi trong nam snippets" » "vi thong nam snippets", "vi trong lam snippets", "vi trong cac snippets", "vai trong nam snippets", "voi trong nam snippets", "bi trong nam snippets", "vi trong nam 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 trong nam 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 trong nam snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vi trong nam snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vi trong nam snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.