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 van du snippets" » "dung van code snippets", "duong van du snippets", "dung va du snippets", "dang van du snippets", "dung van duy snippets", "dung van dau snippets", "dung van de 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 du 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 van du snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java caicode snippets ) or ( dung van du snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java caicode snippets") or ("dung van du snippets"))) or ("locating bug core snippets"))*.