Perhaps you should try some spelling variations:
xang cho » sang cho, hang cho, tang cho
thuc van » thuc vat, thuc dan, thuc va
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu xang » ty xang, tu lang, tu quang
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
vuc van » duc van, luc van, chuc van
cua cau » cua chu, cua cay, cua can
ve cac » va cac, vien cac

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 tu xang cho hoc. hieu ve cac ((vuc van) or (thuc van)) hanh vi ((cua cau) OR (cua cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu xang cho hoc. hieu ve cac ((vuc van) OR (thuc van)) hanh vi ((cua cau) OR (cua cac))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu xang cho hoc. hieu ve cac ((vuc van) or (thuc van)) hanh vi ((cua cau) OR (cua cac))*".