Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » trinh luat, trinh quan, trinh luan
dan thanh » dang thanh, danh thanh, ban thanh
hoc hieu » hoc thieu, hoc hien, doc hieu
tinh cua » sinh cua, tinh chat, tranh cua

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

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