Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
co sach » bo sach, cuon sach, hoc sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va danh » va dinh, va hanh, dia danh
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach y nang x hoi. hieu ve pham duc ((((va danh) or (va dan))) or (va thanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y nang x hoi. hieu ve pham duc ((((va danh) OR (va dan))) OR (va thanh)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: co sach y nang x hoi. hieu ve pham duc ((((va danh) or (va dan))) or (va thanh)) vai cua te*.