Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
doanh ban » doanh bat, doanh van, doanh nhan
ty trang » ta trang, te trang, tu trang
trang xa » trang va, trang ha, trong xa
danh vai » danh sai, danh va, doanh van
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty trang xa hoi. hieu ve cham thuc va ((danh vai) or (doanh ban)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty trang xa hoi. hieu ve cham thuc va ((danh vai) OR (doanh ban)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: so sach ty trang xa hoi. hieu ve cham thuc va ((danh vai) or (doanh ban)) cuu tre*.