Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cham tuc » nham thuc, pham thuc, tham thuc
ky trong » ly trong, ke trong, cay trong
trong xa » trong xay, trong ca, trong xu
qua cham » qua hai, qua cac, va cham
danh vai » danh sai, danh va, dang van
su sach » vu sach
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
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) or (so sach)) ky trong xa hoi. hieu qua cham tuc va ((danh vai) or (doanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky trong xa hoi. hieu qua cham tuc va ((danh vai) OR (doanh van)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky trong xa hoi. hieu qua cham tuc va ((danh vai) or (doanh van)) cua tre*.