Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
van cham » van chat, van tham, va cham
trang xa » trang va, trang ha, trang tai
trong xa » trong xay, trong ca, trong xu
hieu van » hieu va, thien van, lieu va
cham tuc » nham thuc, pham thuc, tham thuc
danh va » doanh va, hanh va, anh va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa

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