Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
day nhanh » day thanh, duy nhanh, dac nhan
dao hanh » dao thanh, dang hanh, ban hanh
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua
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: su sach ky nang x hoi. hieu ve cham thuc ((dao hanh) or (day nhanh)) ((di cua) OR (de cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ve cham thuc ((dao hanh) OR (day nhanh)) ((di cua) OR (de cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ve cham thuc ((dao hanh) or (day nhanh)) ((di cua) OR (de cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ve cham thuc ((dao hanh) or (day nhanh)) ((di cua) OR (de cua)) te*.