Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dao voi lan snippets" » "da voi lan snippets", "dao noi lan snippets", "do voi lan snippets", "dao voi can snippets", "dao loi lan snippets", "dao voi dan snippets", "dao voi lan 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: "((((\"dao voi lan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dao voi lan snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dao voi lan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.