Perhaps you should try some spelling variations:
nang khoa » hang khoa, dang khoa, nang hoa
khoa hoc » hoa hoc
van hanh » van thanh, ban hanh, van anh
sach thu » sach thue, sach thieu, sach tham
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
sach ty » sach y, xach tay, sach hay
sach tu » cach tu, sach uu, sach xu
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
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 thu) or (((sach tu) OR (sach ty)))) nang khoa hoc. hieu ve cac xuc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach thu) OR (((sach tu) OR (sach ty)))) nang khoa hoc. hieu ve cac xuc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thu) or (((sach tu) OR (sach ty)))) nang khoa hoc. hieu ve cac xuc van hanh vi cua cau*".