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