Perhaps you should try some spelling variations:
nganh che » nganh nghe, nganh co, hanh che
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
anh nghe » lang nghe, nang nghe, van nghe
sach vu » sach va, sach tu, sach uu
van cac » van hac, van cau, van bac
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach vu ((nganh che) or (anh nghe)) hoc. hieu van cac ((xuc van) OR (vuc van)) hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach vu ((nganh che) OR (anh nghe)) hoc. hieu van cac ((xuc van) OR (vuc van)) hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach vu ((nganh che) or (anh nghe)) hoc. hieu van cac ((xuc van) OR (vuc van)) hanh vi cua cau*".