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