Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tang van lap snippets" » "dang van lap snippets", "hoang van lap snippets", "trong van lap snippets", "tang van lam snippets", "tang dan lap snippets", "tang van dap 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 ("tang van lap snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tang van lap snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tang van lap snippets"))) or ("locating bug core snippets"))*.