Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
cau tren » cu tren, dau tren, ca tren
danh vai » danh sai, danh va, doanh van
ty trong » ly trong, ky trong, y trong
trong xa » trong xay, trong ca, trong xu
cham tuc » nham thuc, pham thuc, tham thuc
cuu tre » cua tre, cau treo
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
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 trong xa hoi. hieu ve cham tuc va ((danh vai) or (doanh ban)) ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty trong xa hoi. hieu ve cham tuc va ((danh vai) OR (doanh ban)) ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: su sach ty trong xa hoi. hieu ve cham tuc va ((danh vai) or (doanh ban)) ((cuu tre) or (cau tren))*.