Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using java java snippets" » "using data java snippets", "using java java slippers"
"vi huong dan snippets" » "va huong dan snippets", "ve huong dan snippets", "vi luong dan snippets", "vi huong dan slippers"

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: "((((\"vi huong dan snippets\") OR (\"using java java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi huong dan snippets ) OR ( using java java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi huong dan snippets") OR ("using java java snippets"))) OR ("locating bugs code snippets"))*.