Perhaps you should try some spelling variations:
"using java caicode snippets" » "using data caicode snippets", "using java caicore snippets"
"dung san do snippets" » "dong san do snippets", "dung sai do snippets", "dung luan do snippets", "dung ban do snippets", "dung san co snippets", "dung van do 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 san 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 san do snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java caicode snippets ) or ( dung san do snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java caicode snippets") or ("dung san do snippets"))) or ("locating bug code snippets"))*.