Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"huong can ho snippets" » "huong dan ho snippets", "huong lan ho snippets", "huong cau ho snippets", "huong can tho snippets", "huong can bo snippets", "huong van ho 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 ("huong can ho snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("huong can ho snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( huong can ho snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("huong can ho snippets"))) or ("locating bug core snippets"))*.