Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"duong duc dat snippets" » "luong duc dat snippets", "duong qua dat snippets", "dang duc dat snippets", "duong duc duat snippets", "duong duoc dat snippets", "duong duc dai 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 ("duong duc dat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("duong duc dat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( duong duc dat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("duong duc dat snippets"))) or ("locating bug core snippets"))*.