Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
hanh dinh » thanh dinh, hinh dinh, hanh tinh
cua nhung » va nhung
trinh ban » trinh han, trinh san, trinh dan
dinh cua » dinh cuu, sinh cua, dinh cu
ho hieu » ho chieu, hoi hieu, nho hieu
ban dau » bat dau, ban dan, van dau

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 quang - hanh dinh cua nhung cong trinh ban dau~.
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh dinh cua nhung cong trinh ban dau*.