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