Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"hung tran php snippets" » "huong tran php snippets", "quang tran php snippets", "hung thang php snippets", "hung tran thi snippets", "hung tran thu snippets", "hung tran chi 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 ("hung tran 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 ("hung tran php snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( hung tran php snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("hung tran php snippets"))) or ("locating bug core snippets"))*.