Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty tang » tay tang, ty xang, ty hang
tang co » tang cho, nang co, tang o
hieu ve » hieu va, hieu van
vuc van » duc van, luc van, thuc van
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 co hoc. hieu ve cac ((vuc van) or (thuc dan)) anh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty tang co hoc. hieu ve cac ((vuc van) OR (thuc dan)) anh vi cua cau*.