Perhaps you should try some spelling variations:
"dang muoi cach snippets" » "dang mui cach snippets", "dang khoi cach snippets", "dang quoc cach snippets", "dang loi cach snippets", "dang cuoc cach snippets", "dang mot cach snippets"
"dung java java snippets" » "dung va 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: (((("dang muoi cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang muoi cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang muoi cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang muoi cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.