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
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » hoc thieu, hoc hien
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc thieu) or (doc hieu)) manh - hanh trinh cua nhung cong ((manh toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (doc hieu)) manh - hanh trinh cua nhung cong ((manh toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (doc hieu)) manh - hanh trinh cua nhung cong ((manh toan) or (van toan)) cau*.