Perhaps you should try some spelling variations:
day nhanh » day thanh, dac nhan, day manh
duy nhanh » duy khanh, duy anh, duy phan
phan thuc » nhan thuc, phap thuc, pham thuc
cau tren » cu tren, dau tren, ca tren
cuu tre » cua tre, cau treo
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
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 phan thuc ((day nhanh) or (duy nhanh)) de ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu ve phan thuc ((day nhanh) OR (duy nhanh)) de ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu ve phan thuc ((day nhanh) or (duy nhanh)) de ((cuu tre) or (cau tren))*.