Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tung dan php snippets" » "dung dan php snippets", "huong dan php snippets", "trung dai php snippets", "tung dan pho snippets", "tung danh phap snippets", "tung ban phap snippets"
"locating bug core snippets" » "locating bug code 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 code snippets") or ("tung dan php snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("tung dan php snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tung dan php snippets ))) or ( locating bug core snippets ))*.