Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"con tap dan snippets" » "cong tac dan snippets", "toan tap dan snippets", "cong tan dan snippets", "con tap doan snippets", "con tap danh snippets", "con tap van snippets", "con tap dan 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: "((((\"con tap dan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( con tap dan snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("con tap dan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.