Perhaps you should try some spelling variations:
dao thanh » ban thanh, tro thanh, ha thanh
day nhanh » day thanh, duy nhanh, dac nhan
de thanh » le thanh
cam thuc » am thuc, nam thuc, cam thu
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
di cuu » di cau, di cua, dinh cuu
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: vu sach ky nang x hoi. hieu va cam thuc ((((dao thanh) or (de thanh))) or (day nhanh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu va cam thuc ((((dao thanh) OR (de thanh))) OR (day nhanh)) di cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu va cam thuc ((((dao thanh) or (de thanh))) or (day nhanh)) di cuu tre*.