Perhaps you should try some spelling variations:
dong khoa » duong khoa, dung khoa, dong hoa
van thanh » ban thanh, van tuan
chua tri » chu tri, chua trieu, chua tivi
thanh va » thanh van, hanh va, thanh ha
hieu thi » sieu thi, hieu chi, hiep thi
khoa hoi » khoan hoi, khoa hoc, khoa doi
ky dong » ly dong, ky dang, ky cong
bo sach » hoc sach
thi hai » thi mai, thi hanh
hai xuc » hai cuc, hai xu, chat xuc
xuc van » duc van, luc van, vuc van
co sach » cuon sach, hoc sach
va chua » vua chua, ca chua, va chu
so sach » so sanh, hoc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((so sach) OR (co sach))) or (bo sach)) ky dong khoa hoi. hieu thi hai xuc van thanh va chua tri~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((so sach) OR (co sach))) OR (bo sach)) ky dong khoa hoi. hieu thi hai xuc van thanh va chua tri.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((so sach) OR (co sach))) or (bo sach)) ky dong khoa hoi. hieu thi hai xuc van thanh va chua tri".
• Adding a wildcard symbol may retrieve word variants: ((((so sach) OR (co sach))) or (bo sach)) ky dong khoa hoi. hieu thi hai xuc van thanh va chua tri*.