Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
day nhanh » day thanh, duy nhanh, dac nhan
pham thuc » phap thuc, pham chuc, nham thuc
khach ky » hanh ky, thanh ky
day hanh » day thanh, dao hanh, day manh
vu khach » vu khanh, vu khac, vay khach
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
de cua » le cua, te cua, dieu cua
x hoi » o hoi, x ho, 5 hoi

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) OR (xa hoi)). hieu va pham thuc ((day hanh) or (day nhanh)) de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang ((x hoi) OR (xa hoi)). hieu va pham thuc ((day hanh) OR (day nhanh)) de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach ky nang ((x hoi) OR (xa hoi)). hieu va pham thuc ((day hanh) or (day nhanh)) de cua triet*".