Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua xang » chua nang, chuc nang, chu bang
hanh dung » thanh dung, anh dung, hanh dong
van nhung » van nhuong, va nhung, van hung
chu xanh » chu manh, chieu xanh, chuc danh
dung van » duong van, dung va, dang van
cong van » cong vang, cong san, song van
van bai » van ban, van bao, van hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (chua xang)) - hanh dung van nhung cong van bai tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chua xang)) - hanh dung van nhung cong van bai tap*.