Perhaps you should try some spelling variations:
nganh che » nganh nghe, nganh co, ngang cho
toc sach » hoc sach, doc sach, thuoc sach
ngan cho » ngang cho, ngang tho, san cho
van hanh » van thanh, ban hanh, van anh
hanh che » han che, hanh he, hanh nghe
hanh di » hanh vi, hanh de, hang di
vuc van » duc van, luc van, thuc van
cac vuc » cac nuoc, cac vung, cac cuoc
hieu ve » hieu va, hieu van
sach va » sach xa, sach ha, sach dao
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de 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 va ((ngan cho) or (((nganh che) or (hanh che)))) hoc. hieu ve cac vuc van hanh di cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach va ((ngan cho) OR (((nganh che) OR (hanh che)))) hoc. hieu ve cac vuc van hanh di cua cau*.