Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
trong dang » truong dang, trong dong, trong dung
doi chieu » doc hieu, doi chi, mot chieu
trung cua » truong cua, trung tuan, trung cap
trong dan » trong san, trong tan, trong ban
cua sinh » hoa sinh, va sinh
than ban » thanh ban, toan ban, than man

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh trung cua sinh ((trong dan) OR (trong dang)) than ban~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh trung cua sinh ((trong dan) OR (trong dang)) than ban*.