Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
chat thuc » thuat thuc, nhan thuc, chat thai
khach ky » hanh ky, thanh ky
day hanh » day thanh, dao hanh, day manh
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
cua tre » cua te, cuu tre, cua triet
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: vay khach ky nang x hoi. hieu ve chat thuc ((day hanh) or (day nhanh)) de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vay khach ky nang x hoi. hieu ve chat thuc ((day hanh) OR (day nhanh)) de cua tre.
• Adding a wildcard symbol may retrieve word variants: vay khach ky nang x hoi. hieu ve chat thuc ((day hanh) or (day nhanh)) de cua tre*.