Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"viet hong van snippets" » "viet huong van snippets", "viet thong van snippets", "viet hoang van snippets", "viet song van snippets", "viet hong van slippers"
"using _ java snippets" » "using _ 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: (((("viet hong van snippets") or ("using _ java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet hong van snippets") OR ("using _ java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( viet hong van snippets ) or ( using _ java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet hong van snippets") or ("using _ java snippets"))) or ("locating bugs code snippets"))*.