Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ve cham » va cham, ve chat, vu cham
ca viet » co viet, hoa viet, san viet
hanh li » nhanh li, hanh vi, han li
tuc van » thuc van, truc van, tuc va
va viet » hoa viet, san viet, mai viet
sai ky » sac ky
ve cam » ve cac, va cam, ve cai
su sai » su tai, su hai, su dai
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: su sai ky nang x hoi. hieu ((ve cam) or (ve cham)) tuc van hanh li ((ca viet) OR (va viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky nang x hoi. hieu ((ve cam) OR (ve cham)) tuc van hanh li ((ca viet) OR (va viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky nang x hoi. hieu ((ve cam) or (ve cham)) tuc van hanh li ((ca viet) OR (va viet))*".