Perhaps you should try some spelling variations:
"viet trong tan snippets" » "viet trung tan snippets", "viet thong tan snippets", "viet huong tan snippets", "viet trong san snippets", "viet trong quan snippets", "viet trong cac snippets", "viet trong tan 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: (((("viet trong tan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet trong tan snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet trong tan snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet trong tan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.