Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
day hanh » day nhanh, dao hanh, day manh
v pham » d pham
de cua » le cua, te cua, dieu cua
cua te » cua tu
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 khach ky nang x hoi. hieu ((v pham) or (vi pham)) thuc ((day hanh) or (day thanh)) de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang x hoi. hieu ((v pham) OR (vi pham)) thuc ((day hanh) OR (day thanh)) de cua te.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang x hoi. hieu ((v pham) or (vi pham)) thuc ((day hanh) or (day thanh)) de cua te*.