Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using java code snippets" » "using data code snippets", "using java code slippers"
"duc toan lua snippets" » "duc tan lua snippets", "duc ton lua snippets", "duc hoan lua snippets", "duc toan luan snippets", "duc toan luat snippets", "duc toan cua snippets", "duc toan lua 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: "((((\"using java code snippets\") OR (\"duc toan lua snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( duc toan lua snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("duc toan lua snippets"))) OR ("locating bugs code snippets"))*.