Perhaps you should try some spelling variations:
doanh cua » doanh luan
va thanh » ban thanh, va tinh, le thanh
vien cac » vien bach, vien dai, gian cac
su sach » so sach, vu sach
vien da » vien dai, hien dai
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
cua cu » cua chu, cua cau, cua su
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach vu nang x hoi. hieu ((vien cac) OR (vien da)) tuc ((va thanh) or (gia thanh)) doanh cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach vu nang x hoi. hieu ((vien cac) OR (vien da)) tuc ((va thanh) OR (gia thanh)) doanh cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach vu nang x hoi. hieu ((vien cac) OR (vien da)) tuc ((va thanh) or (gia thanh)) doanh cua cu".
• Adding a wildcard symbol may retrieve word variants: su sach vu nang x hoi. hieu ((vien cac) OR (vien da)) tuc ((va thanh) or (gia thanh)) doanh cua cu*.