Perhaps you should try some spelling variations:
"va duong tren snippets" » "va dung tren snippets", "va duong tien snippets", "va dong tren snippets", "van duong tren snippets", "va tuong tren snippets", "va huong tren snippets", "va duong tren 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 duong tren 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 duong tren snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va duong tren snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va duong tren snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.