Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
hanh sinh » hanh tinh, hanh dinh, hanh chinh
hinh sinh » tinh sinh, hinh dinh, hinh kinh
cua nhung » va nhung
doi chau » doi chieu, gioi chau, hoi chu
cong tac » cong ty
tac vang » cac van, tac dung, tac dong
vang ban » van ban, hang ban, nang ban

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 chau tinh - ((hanh sinh) OR (hinh sinh)) cua nhung cong tac vang ban~".
• Adding a wildcard symbol may retrieve word variants: doi chau tinh - ((hanh sinh) OR (hinh sinh)) cua nhung cong tac vang ban*.