Perhaps you should try some spelling variations:
duong sinh » duong minh, duong manh, trong sinh
dong duong » tuong duong, cuong duong, dong thong
sinh toan » tinh toan, hinh toan, minh toan
nho hieu » nha hieu, nho sieu, nghe hieu
nhu hieu » nhu hien, nha hieu, nhu dieu
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nho hieu) OR (nhu hieu)) lang - hanh ((mang cua) or (dung cua)) dong duong sinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nho hieu) OR (nhu hieu)) lang - hanh ((mang cua) OR (dung cua)) dong duong sinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nho hieu) OR (nhu hieu)) lang - hanh ((mang cua) or (dung cua)) dong duong sinh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((nho hieu) OR (nhu hieu)) lang - hanh ((mang cua) or (dung cua)) dong duong sinh toan ban*.