Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung va » truong va, trang va, trung ha
van toan » van tuan, van tan, van thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (dieu hanh)) - thanh trung va ((nhung cong) or (nhung phuong)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (dieu hanh)) - thanh trung va ((nhung cong) OR (nhung phuong)) van toan ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (dieu hanh)) - thanh trung va ((nhung cong) or (nhung phuong)) van toan ban*.