Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
cao suc » cao su, cao duc
va hanh » van hanh, va thanh, va danh
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
y nang » ly nang, v nang, may nang
ve cao » va cao, ve bao, ve cac
vi cuu » vi luu, vinh cuu

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: vu sach ((y nang) OR (ky nang)) x ho. hieu ve cao suc ((va hanh) OR (va tinh)) vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) OR (ky nang)) x ho. hieu ve cao suc ((va hanh) or (va tinh)) vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) OR (ky nang)) x ho. hieu ve cao suc ((va hanh) or (va tinh)) vi cuu tre*.