Perhaps you should try some spelling variations:
"thuc viet cua snippets" » "hoc viet cua snippets", "thuc hien cua snippets", "thuc vat cua snippets", "thuc viec cua snippets", "thuc viet ca snippets", "thuc viet qua 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: (((("thuc viet cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc viet cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc viet cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc viet cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.