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
chi tinh » chai tinh, chi minh, chi binh
tan toan » tan tran, tap toan, van toan
van tuan » van quan, van ban, anh tuan
doi chi » doi khi

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

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