Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
cac thuc » cach thuc, cac thu, can thuc
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
di cua » doi cua, de cua, do cua
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 ky nang x hoi. hieu va cac thuc vat thanh ((di cua) OR (dai cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky nang x hoi. hieu va cac thuc vat thanh ((di cua) OR (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: co sach ky nang x hoi. hieu va cac thuc vat thanh ((di cua) OR (dai cua)) triet*.