Perhaps you should try some spelling variations:
vat nhanh » vat thanh, phat nhanh, hat nhan
nhanh dai » nhan dai, nhanh hai, nhanh thai
cam thuc » am thuc, nam thuc, cam thu
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky lang xa hoi. hieu ve cam thuc vat nhanh dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: su xac ky lang xa hoi. hieu ve cam thuc vat nhanh dai cua tre*.