Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"vi trung hop snippets" » "vi truong hop snippets", "vi trung hoc snippets", "vi trung hoa snippets", "va trung hop snippets", "viet trung hop snippets", "vien trung hop 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: "((((\"vi trung hop snippets\") OR (\"using java java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi trung hop snippets ) OR ( using java java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi trung hop snippets") OR ("using java java snippets"))) OR ("locating bugs code snippets"))*.