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