Perhaps you should try some spelling variations:
nganh che » nganh nghe, nganh co, ngang cho
van hanh » van thanh, ban hanh, van anh
ngan cho » ngang cho, ngang tho, san cho
hanh che » han che, hanh he, hanh nghe
te sach » toc sach
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
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: te sach va ((((ngan cho) OR (nganh che))) or (hanh che)) hoc. hieu ve cac vuc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach va ((((ngan cho) OR (nganh che))) OR (hanh che)) hoc. hieu ve cac vuc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach va ((((ngan cho) OR (nganh che))) or (hanh che)) hoc. hieu ve cac vuc van hanh vi cua cau*".