Perhaps you should try some spelling variations:
dong khoa » duong khoa, dung khoa, dong hoa
ban thanh » ban hanh, ban hang
thi cham » thi hai, toc cham, thi ha
khoa hoi » khoan hoi, khoa hoc, khoa doi
dan cua » dan ca, dai cua, day cua
ban cua » ban quan
xuc ban » duc ban, cuc ban, quoc ban
bo sach » co sach, hoc sach
tu cham » toc cham
y dong » ly dong, ty dong, _ dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y dong khoa hoi. hien ((tu cham) OR (thi cham)) xuc ban thanh ((ban cua) or (dan cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y dong khoa hoi. hien ((tu cham) OR (thi cham)) xuc ban thanh ((ban cua) OR (dan cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach y dong khoa hoi. hien ((tu cham) OR (thi cham)) xuc ban thanh ((ban cua) or (dan cua)) te".
• Adding a wildcard symbol may retrieve word variants: bo sach y dong khoa hoi. hien ((tu cham) OR (thi cham)) xuc ban thanh ((ban cua) or (dan cua)) te*.