Perhaps you should try some spelling variations:
te sach » toc sach
ty tang » tay tang, ty xang, ky tang
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
cac vuc » cac nuoc, cac vung, cac cuoc
vuc van » duc van, luc van, thuc van
van anh » van thanh, tuan anh, van minh
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
anh vi » hanh vi, anh va, anh ve
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 ((ty tang) or (ty hang)) co hoc. hieu ve cac vuc van anh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty tang) OR (ty hang)) co hoc. hieu ve cac vuc van anh vi cua cau*.