Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"van tran van snippets" » "van trang van snippets", "van tranh van snippets", "van tuan van snippets", "van luan van snippets", "van tran van slippers"
"using a java snippets" » "using _ java snippets", "using a java slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van tran van snippets") or ("using a java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van tran van snippets") OR ("using a java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van tran van snippets ) or ( using a java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tran van snippets") or ("using a java snippets"))) or ("locating bugs code snippets"))*.