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

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) OR (thuat sach)) y mang may khoa. hieu ((va cam) or (vu kham)) xuc van dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y mang may khoa. hieu ((va cam) OR (vu kham)) xuc van dinh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) y mang may khoa. hieu ((va cam) or (vu kham)) xuc van dinh vi cua te*".