Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
su triet » su viet, su tien, ve triet
ve cham » va cham, ve chat, vu cham
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
so viet » hoc viet
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa
su hai » su tai
su sai » su tai, su dai, su mai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su hai)) ky nang x ho. hieu ve cham tuc va danh vi ((su triet) OR (so viet))~.
• Adding a wildcard symbol may retrieve word variants: ((su sai) or (su hai)) ky nang x ho. hieu ve cham tuc va danh vi ((su triet) or (so viet))*.