Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java cau snippets" » "using java code snippets", "using data cau snippets", "using java can snippets", "using va cau snippets"
"dung luan de snippets" » "dung luan code snippets", "dung luan den snippets", "dung luan ve snippets", "dung luat de 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 cau snippets") or ("dung luan de snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java cau snippets") OR ("dung luan de snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java cau snippets ) or ( dung luan de snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java cau snippets") or ("dung luan de snippets"))) or ("locating bug core snippets"))*.