Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
trinh ban » trinh han, trinh san, trinh dan
nhu hieu » nhu hien, nha hieu, nho hieu
sinh cua » manh cua, dinh cuu, sinh va
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: nhu hieu lang - hanh sinh cua nhung cong trinh ban dau~.
• Adding a wildcard symbol may retrieve word variants: nhu hieu lang - hanh sinh cua nhung cong trinh ban dau*.