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"
"dan toan anh snippets" » "van toan anh snippets", "dan than anh snippets", "manh toan anh snippets", "dan toan hanh snippets", "dan tuan anh snippets", "dan tran anh snippets", "dan toan anh 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 (\"dan toan anh snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dan toan anh snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("dan toan anh snippets"))) OR ("locating bugs code snippets"))*.