Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"den tang cua snippets" » "nen tang cua snippets", "de tang cua snippets", "den nang cua snippets", "den mang cua snippets", "den hang cua snippets", "den tang luan snippets"
"locating bug core snippets" » "locating bug code 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 ("den tang cua snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( den tang cua snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("den tang cua snippets"))) or ("locating bug core snippets"))*.