Perhaps you should try some spelling variations:
"hoc trong va snippets" » "hoc thuong va snippets", "hoc tieng va snippets", "dot trong va snippets", "hoc trong van snippets", "hoc trong ca snippets", "hoc trong cac snippets", "hoc trong 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: "((((\"hoc trong va snippets\") OR (\"using a java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( hoc trong va snippets ) OR ( using a java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hoc trong va snippets") OR ("using a java snippets"))) OR ("locating bug code snippets"))*.