Perhaps you should try some spelling variations:
viec thach » viet thanh, vien thanh, viec thuc
hieu viec » nhieu viec, hieu ve, sieu viet
thach duc » thach thuc, than duc, thinh duc
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
ky sang » ky dang, ky tang, duy sang
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ma hoi » mai hoi, xa hoi, ma hoa
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: tu sach ((ky sang) OR (ky nang)) ma hoi. hieu viec thach duc va danh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) or (ky nang)) ma hoi. hieu viec thach duc va danh vi cua triet*.