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