Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
day nhanh » day thanh, duy nhanh, dac nhan
day hanh » day thanh, dao hanh, day manh
sach ly » sach y, sach lo, sach ty
vu sach » vu bach, su sach, vu khach
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
di cua » dai cua, doi cua, de cua
le cua » ly 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: vu sach ly nang x hoi. hieu va cham thuc ((day hanh) or (day nhanh)) ((di cua) or (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang x hoi. hieu va cham thuc ((day hanh) OR (day nhanh)) ((di cua) OR (le cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ly nang x hoi. hieu va cham thuc ((day hanh) or (day nhanh)) ((di cua) or (le cua)) tre*.