Perhaps you should try some spelling variations:
"using java cong snippets" » "using data cong snippets", "using va cong snippets", "using java can snippets"
"ung dung code snippets" » "ung dung cong snippets", "ung dung co snippets", "ung dung de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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 cong snippets") or ("ung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java cong snippets") OR ("ung dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java cong snippets ) or ( ung dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java cong snippets") or ("ung dung code snippets"))) or ("locating bug code snippets"))*.