Perhaps you should try some spelling variations:
"cuon dan cach snippets" » "cuon danh cach snippets", "cuoi dan cach snippets", "cuong danh cach snippets", "cuon dan cac snippets", "cuon dan canh snippets", "cuon nhan cach snippets"
"dung va java snippets" » "dung java java 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: (((("cuon dan cach snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon dan cach snippets") OR ("dung va java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuon dan cach snippets ) or ( dung va java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon dan cach snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))*.