Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
van toan » van tuan, van thanh, manh toan
he hieu » he nhieu, he dieu, de hieu
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: he hieu lang - hanh trinh cua nhung cong ((van toan) OR (van tan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "he hieu lang - hanh trinh cua nhung cong ((van toan) OR (van tan)) cau".
• Adding a wildcard symbol may retrieve word variants: he hieu lang - hanh trinh cua nhung cong ((van toan) OR (van tan)) cau*.