Perhaps you should try some spelling variations:
trong sinh » trong kinh, trong san
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
sinh toan » tinh toan, hinh toan, minh toan
nho hieu » nha hieu, nho sieu, nhu hieu
cua dong » chua dong, cua dang, cua nong
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 lang - hanh mang ((cua dong) or (cua cong)) trong sinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu lang - hanh mang ((cua dong) OR (cua cong)) trong sinh toan ban.
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh mang ((cua dong) or (cua cong)) trong sinh toan ban*.