Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
su triet » su viet, su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cay phoi » cap phoi, tay hoi, cay cho
qua tham » qua cham, qua than, qua thanh
thuc va » thuc vat, thuc dan, thuc day
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
xay hoi » tay hoi, gay thoi, may thoi
ky dang » ky nang, ky danh
vi su » va su, ve su, ki su

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 ky dang ((((xay hoi) OR (cay phoi))) OR (xa hoi)). hieu qua tham thuc va thanh vi su triet~.
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang ((((xay hoi) or (cay phoi))) or (xa hoi)). hieu qua tham thuc va thanh vi su triet*.