Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu ve » hieu va, hieu van
va hang » van hang, va nang, va lang
hang di » hang doi, hang vi, hang dien
y nang » ky nang, ly nang, v nang
cam lo » nam lo, cam ly, cam o
di qua » di cua, di quanh
x hoi » xa hoi, o hoi, x ho

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang x hoi. hieu ve ((cam loc) OR (cam lo)) va hang di qua su~".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x hoi. hieu ve ((cam loc) OR (cam lo)) va hang di qua su*.