Perhaps you should try some spelling variations:
so viet » hoc viet
hieu ve » hieu va, hieu van
su tien » su kien, su hien, tu tieng
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam tuc » cam xuc, cam tu, nam thuc
ve cam » ve cham, ve cac, va cam
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 cam tuc va danh vi ((su tien) OR (so viet))~.
• Adding a wildcard symbol may retrieve word variants: ((su sai) or (su hai)) ky nang x ho. hieu ve cam tuc va danh vi ((su tien) or (so viet))*.