Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dong son lieu snippets" » "dong von lieu snippets", "dong san lieu snippets", "hoang son lieu snippets", "dong so lieu snippets", "dong son le snippets", "dong co lieu 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 son lieu snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dong son lieu snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dong son lieu snippets"))) or ("locating bug core snippets"))*.