Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
hanh trung » thanh trung, hanh trang, manh trung
duong manh » duong van
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban
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 nhung duong manh ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trung cua nhung duong manh ((toan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trung cua nhung duong manh ((toan tai) or (toan tap))*.