Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cham tuc » nham thuc, pham thuc, tham thuc
danh sai » dung sai, danh bat, danh dau
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
sach ta » sach tai, sach xa, sach ha
hieu ve » hieu va, hieu van
ta tang » ta trang, tay tang, ha tang
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
ha hoi » hoa hoi, ha noi, va hoi

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 ta tang ((ha hoi) or (xa hoi)). hieu ve cham tuc va ((danh sai) or (doanh van)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ta tang ((ha hoi) OR (xa hoi)). hieu ve cham tuc va ((danh sai) OR (doanh van)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ta tang ((ha hoi) or (xa hoi)). hieu ve cham tuc va ((danh sai) or (doanh van)) cuu tre*.