Perhaps you should try some spelling variations:
"van thi va snippets" » "van tai va snippets", "dan thi va snippets", "van thu va snippets", "van thi van snippets", "van thi ha snippets", "van phi va snippets", "van thi va slippers"
"using a java snippets" » "using _ java snippets", "using a 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"van thi va snippets\") OR (\"using a java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( van thi va snippets ) OR ( using a java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van thi va snippets") OR ("using a java snippets"))) OR ("locating bug code snippets"))*.