Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, thanh tinh, canh tinh
hang cong » dang cong, hang nong, bang cong
tan than » tan thanh, tan tran, ban than
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 ((nhung cong) OR (hang cong)) tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh tinh) OR (nhanh tinh)) cua ((nhung cong) OR (hang cong)) tan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh tinh) or (nhanh tinh)) cua ((nhung cong) OR (hang cong)) tan than cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh tinh) or (nhanh tinh)) cua ((nhung cong) OR (hang cong)) tan than cau*.