Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
cong thanh » dong thanh, cong trinh, truong thanh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, thanh tinh, canh tinh
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong ty
than cau » toan cau, phan cau, than cap
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) or (nhanh tinh)) cua dung ((cong tan) OR (cong thanh)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh tinh) OR (nhanh tinh)) cua dung ((cong tan) OR (cong thanh)) than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh tinh) or (nhanh tinh)) cua dung ((cong tan) OR (cong thanh)) than cau*".