Perhaps you should try some spelling variations:
"va tranh trong snippets" » "va tran trong snippets", "va trinh trong snippets", "va anh trong snippets", "van tranh trong snippets", "va thanh trong snippets", "va trang trong snippets", "va tranh trong 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: (((("va tranh trong snippets") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va tranh trong snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va tranh trong snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va tranh trong snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.