Perhaps you should try some spelling variations:
than thong » than thuong, toan thong, tran thong
sach tren » sach tien, sach tranh
tren chuc » tren thuc, treo chu
chuc danh » chuc nganh, thuc hanh, chuc nang
danh khoa » doanh khoa, danh hoa, dinh khoa
khoa than » khoa luan, hoa thai, hoa tan
pho thong » he thong
minh tri » dinh tri, chinh tri, minh thu
anh khoa » doanh khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
vu sach » vu bach, su sach, vu khach
so minh » so sinh, so tinh, do minh
tri vu » tri va, thi vu, tri du
vu anh » vu khanh, vu thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach tren chuc danh khoa than thong ) or ( so minh tri vu anh khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach tren chuc danh khoa than thong ) OR ( so minh tri vu anh khoa pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach tren chuc danh khoa than thong ) or ( so minh tri vu anh khoa pho thong ))*.