Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
ty nang » ty xang, ty hang, ly nang
hieu ve » hieu va, hieu van
tinh du » tinh duc, tinh dau, tich du
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
du cua » duy cua, dau cua, dum cua
cua tu » cua tuc, cua su, cua cu

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: so sach ((ty nang) OR (ky nang)) xa hoi. hieu ve cam ((xuc va) OR (luc va)) tinh du cua tu~.
• Adding a wildcard symbol may retrieve word variants: so sach ((ty nang) or (ky nang)) xa hoi. hieu ve cam ((xuc va) or (luc va)) tinh du cua tu*.