Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets", "using java java slippers"
"van truong lam snippets" » "tang truong lam snippets", "xuan truong lam snippets", "vien truong lam snippets", "van trong lam snippets", "van truong ham snippets", "van truong luan snippets", "van truong lam slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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