Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc hanh
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 va » lieu va, hieu qua
vuc van » duc van, luc van, chuc van
thuc va » thuc vat, thuc dan, thuc day
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: te sach ty tang co hoc. hieu va cac ((vuc van) or (((thuc van) OR (thuc va)))) hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty tang co hoc. hieu va cac ((vuc van) OR (((thuc van) OR (thuc va)))) hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty tang co hoc. hieu va cac ((vuc van) or (((thuc van) OR (thuc va)))) hanh vi cua cau*".