Perhaps you should try some spelling variations:
nang chat » nang phat, nang cham, nang cao
chat hoc » chat hoa, chat thom, cho hoc
thuc van » thuc vat, thuc dan, thuc va
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
cua cau » cua cac, cua chu, cua can
vuc van » duc van, luc van, chuc van
hieu ve » hieu va, hieu van
tu nang » tru nang, tu nong, tu nano
cua cay » cua cac
ve cac » va cac, vien cac
anh vi » hanh vi, anh va, anh ve

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