Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"vo xuan van snippets" » "vo luan van snippets", "vo quan van snippets", "vo xuan can snippets", "ngo xuan van snippets", "vo xuan 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: (((("vo xuan 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: (((("vo xuan van snippets") OR ("using a java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( vo xuan van snippets ) or ( using a java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vo xuan van snippets") or ("using a java snippets"))) or ("locating bugs code snippets"))*.