Perhaps you should try some spelling variations:
kmay nang » ky nang, kha nang, may nong
ban thanh » ban hanh, ban hang
may nang » may nong, ky nang, cam nang
cam truc » cau truc, nam truc, lam truoc
truc ban » thuc ban, truc dan, truc van
thanh vi » hanh vi, thanh va, thanh ve
cua viet » ca viet, hoa viet, cua vat
vu sach » vu bach, su sach, vu khach
qua cam » qua cham, qua cac, qua ca
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((may nang) OR (kmay nang)) xa hoi. hieu qua cam truc ban thanh vi cua viet~.
• Adding a wildcard symbol may retrieve word variants: vu sach ((may nang) or (kmay nang)) xa hoi. hieu qua cam truc ban thanh vi cua viet*.