Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong dan » phuong danh, phuong doan, huong dan
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
tang cua » mang cua, hang cua, tang luan
nhan tao » nhan dan
nhan tai » hang tai, van tai, toan tai
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 ((trung cua) or (tang cua)) nhung phuong dan ((nhan tao) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ((trung cua) OR (tang cua)) nhung phuong dan ((nhan tao) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ((trung cua) or (tang cua)) nhung phuong dan ((nhan tao) or (nhan tai))*.