Perhaps you should try some spelling variations:
"using java caicode snippets" » "using data caicode snippets", "using java caicore snippets"
"dung cuc do snippets" » "dung cua do snippets", "dung cu do snippets", "dung cac do snippets", "dung cuc du snippets", "dung muc do snippets", "dung cuoc doi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 cuc do snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java caicode snippets") OR ("dung cuc do snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java caicode snippets ) or ( dung cuc do snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java caicode snippets") or ("dung cuc do snippets"))) or ("locating bug code snippets"))*.