Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"van dan hoi snippets" » "van ban hoi snippets", "ban dan hoi snippets", "van dao hoi snippets", "van dan hoc snippets", "van dai hoi snippets", "van dang khoi snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("van dan hoi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van dan hoi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van dan hoi snippets"))) or ("locating bug core snippets"))*.