Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
dan thanh » dang thanh, danh thanh, ban thanh
tinh cua » trinh cua, sinh cua, tinh chat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nhieu tang) or (hieu lang)) - hanh tinh cua nhung huong dan thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (hieu lang)) - hanh tinh cua nhung huong dan thanh san.
• Adding a wildcard symbol may retrieve word variants: hoc ((nhieu tang) or (hieu lang)) - hanh tinh cua nhung huong dan thanh san*.