Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
thu sach » tu sach, thuat sach, thuoc sach
viec cam » viec lam, viec cua, viec va
tinh doi » trinh doc, trinh do, tinh hoc
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cam duc » cam xuc, cao duc, pham duc
tinh di » trinh di, tinh da, tin di
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky lang xa hoi. nhieu viec cam duc va ((tinh di) OR (tinh doi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky lang xa hoi. nhieu viec cam duc va ((tinh di) OR (tinh doi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky lang xa hoi. nhieu viec cam duc va ((tinh di) OR (tinh doi)) cua tre*.