Perhaps you should try some spelling variations:
"using java caicode snippets" » "using data caicode snippets", "using java caicore snippets"
"dung van ho snippets" » "duong van ho snippets", "dung va ho snippets", "dang van ho snippets", "dung van hoa snippets", "dung van hoc snippets", "dung van hoe 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 van ho 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 van ho snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java caicode snippets ) or ( dung van ho snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java caicode snippets") or ("dung van ho snippets"))) or ("locating bug code snippets"))*.