Perhaps you should try some spelling variations:
"using java cau snippets" » "using data cau snippets", "using java can snippets", "using va cau snippets"
"dung trung co snippets" » "dung trong co snippets", "quang trung co snippets", "truong trung co snippets", "dung trung bo snippets", "dung truong cao 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 cau snippets") or ("dung trung co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java cau snippets") OR ("dung trung co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java cau snippets ) or ( dung trung co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java cau snippets") or ("dung trung co snippets"))) or ("locating bug code snippets"))*.