Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dong duoc han snippets" » "dong quoc han snippets", "dong duong han snippets", "trong duoc han snippets", "dong duoc ha snippets", "dong duc han snippets", "dong duoc ban 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 ("dong duoc han snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dong duoc han snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dong duoc han snippets"))) or ("locating bug core snippets"))*.