Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cham cuu » cap cuu, chat cua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
y nang » ly nang, v nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
cuu va » cuu van, cuu ve
vi su » va su, ve su, oi su
ki su » ky su

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: thuat sach ((y nang) OR (ky nang)) ma hoi. lieu va cham cuu va hanh ((vi su) OR (ki su)) tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) or (ky nang)) ma hoi. lieu va cham cuu va hanh ((vi su) OR (ki su)) tren~".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) or (ky nang)) ma hoi. lieu va cham cuu va hanh ((vi su) OR (ki su)) tren*.