Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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