Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
vu khach » vu khanh, vu khac, vay khach
khach ty » sach ty
dao hanh » dao thanh, dang hanh, ban hanh
cam thu » nam thu, cac thu, ca thu
hieu va » lieu va
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ty nang x ho. ((hieu va) or (hieu qua)) cam thu ((dao hanh) or (day nhanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ty nang x ho. ((hieu va) OR (hieu qua)) cam thu ((dao hanh) OR (day nhanh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: vu khach ty nang x ho. ((hieu va) or (hieu qua)) cam thu ((dao hanh) or (day nhanh)) di cua tre*.