Perhaps you should try some spelling variations:
xang khoa » hang khoa, dang khoa, vang khoa
toc sach » hoc sach, doc sach, thuoc sach
khoa hoc » hoa hoc
hieu van » hieu va, thien van, lieu va
chat xuc » chat huu, chao xu, chat cua
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
cac xuc » cac nuoc, cac cuoc, cac quoc
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: toc sach ty xang khoa hoc. hieu van ((((cac xuc) OR (chat xuc))) or (cam xuc)) van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty xang khoa hoc. hieu van ((((cac xuc) OR (chat xuc))) OR (cam xuc)) van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty xang khoa hoc. hieu van ((((cac xuc) OR (chat xuc))) or (cam xuc)) van hanh vi cua cau*".