Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"doi trong duc snippets" » "doi tuong duc snippets", "dot trong duc snippets", "dong trong duc snippets", "doi trong duoc snippets", "doi trong dua snippets", "doi trong cuoc snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("doi trong duc snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doi trong duc snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doi trong duc snippets"))) or ("locating bug core snippets"))*.