Perhaps you should try some spelling variations:
nhan phong » nhan khong, nhan thong, khanh phong
trong tinh » truong tinh, trong kinh, trong sinh
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
tuc dung » thuc dung, tac dung, duc dung
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - nhan phong tuc dung trong tinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - nhan phong tuc dung trong tinh toan cau*.