Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua trung » cua truong, xuan trung, cua nhung
tinh cua » trinh cua, sinh cua, tinh chat
toan dau » toan cau, toan du, toan dam
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh tinh cua trung cong trinh toan dau~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh tinh cua trung cong trinh toan dau*.