Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dong dang deo snippets" » "duong dang deo snippets", "dong bang deo snippets", "dung dang deo snippets", "dong dang do snippets", "dong dang de snippets", "dong dang dieu 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 ("dong dang deo snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dong dang deo snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dong dang deo snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dong dang deo snippets"))) or ("locating bug core snippets"))*.