Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
tran van » luan van
dan toan » van toan, dan than, xuan toan
tang va » trang va, tang van, thang va

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 - hanh ((tang va) or (tran van)) nhung cong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - hanh ((tang va) OR (tran van)) nhung cong ((dan toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - hanh ((tang va) or (tran van)) nhung cong ((dan toan) or (manh toan)) cau*.