Perhaps you should try some spelling variations:
nganh che » nganh nghe, nganh co, hanh che
toc sach » hoc sach, doc sach, thuoc sach
tu nganh » tu ngan, cua nganh, cau nganh
van hanh » van thanh, ban hanh, van anh
sach tu » sach thu, cach tu, sach ty
che hoc » cho hoc, che ho, che thuoc
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cua cau » cua cac, cua chu, cua can
cua cay » cua cac
ve cac » va cac, vien cac

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: toc sach tu nganh che hoc. hieu ve cac xuc van hanh vi ((cua cau) OR (cua cay))~.
• Adding a wildcard symbol may retrieve word variants: toc sach tu nganh che hoc. hieu ve cac xuc van hanh vi ((cua cau) or (cua cay))*.