Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cay mang » cach mang, cay mac, cay cong
may khoa » da khoa, ly khoa, y khoa
van dinh » van minh, van dich, va dinh
vu cham » va cham, vu kham, tu cham
dinh vi » dinh ve, dinh viet, dinh tri
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua
cua te » cua tu
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y mang) OR (cay mang)) may khoa. hieu ((ve cam) or (vu cham)) xuc van dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y mang) OR (cay mang)) may khoa. hieu ((ve cam) OR (vu cham)) xuc van dinh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y mang) OR (cay mang)) may khoa. hieu ((ve cam) or (vu cham)) xuc van dinh vi cua te*".