Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
su sach » so sach, vu sach
quan xa » quan ha, quan va, quan cua
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
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: ((su sach) OR (thuat sach)) lien quan xa hoi. hieu va cam tuc va hanh vi cua vat~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat sach)) lien quan xa hoi. hieu va cam tuc va hanh vi cua vat*.