Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
day nhanh » day thanh, duy nhanh, dac nhan
vu khanh » vu thanh, van khanh, duy khanh
khanh ky » hanh ky, thanh ky, khanh ly
day hanh » day thanh, dao hanh, day manh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
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 khanh ky nang x hoi. hieu ve pham thuc ((day hanh) or (day nhanh)) de ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khanh ky nang x hoi. hieu ve pham thuc ((day hanh) OR (day nhanh)) de ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu khanh ky nang x hoi. hieu ve pham thuc ((day hanh) or (day nhanh)) de ((cua tre) or (cuu tre))*.