Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu ve » hieu va, hieu van
cam loc » cam lo
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
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 ((va hang) OR (va nang)) di qua su~".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x hoi. hieu ve cam loc ((va hang) OR (va nang)) di qua su*.