Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
cham thuc » nham thuc, pham thuc, tham thuc
duy nhanh » duy khanh, day nhanh, duy anh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
di cua » dai cua, doi cua, de cua
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: vu sach ky nang x hoi. hieu ve cham thuc ((dat thanh) or (duy nhanh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu ve cham thuc ((dat thanh) OR (duy nhanh)) di cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu ve cham thuc ((dat thanh) or (duy nhanh)) di cua te*.