Perhaps you should try some spelling variations:
"nhung thanh cua snippets" » "phuong thanh cua snippets", "trung thanh cua snippets", "nhanh thanh cua snippets", "nhung tranh cua snippets", "nhung than cua snippets", "nhung hanh cua 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: (((("nhung thanh 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: (((("nhung thanh cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung thanh cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung thanh cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.