Perhaps you should try some spelling variations:
"using java caicode snippets" » "using java code snippets", "using data caicode snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung cua o snippets" » "dung cua code snippets", "dung luan o snippets", "dung cho o snippets", "dung cua bo snippets", "dung cua co snippets", "dung chua o snippets"

Try widening your search to All Fields.

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