Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cau phuc » cau truc, chau phu, huu phuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va danh, ban hanh
hieu va » lieu va, hieu qua
va cau » van cau, va cac, 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: tu sach ky nang x hoi. hieu va cau phuc ((va hanh) or (va thanh)) vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu va cau phuc ((va hanh) OR (va thanh)) vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu va cau phuc ((va hanh) or (va thanh)) vi ((cua tre) or (cua te))*.