Perhaps you should try some spelling variations:
thuoc thanh » chuoc thanh, thuc thanh, hoc thanh
dang khong » hang khong, dung khong, dang thuong
thanh khoa » thanh hoa, thanh pho, hang khoa
cach thoi » cac thoi, cach thuc, cach noi
thoi chuc » hoi chuc, toi chuc, hoi chu
chuc dang » chuc nang, chuc danh, thuoc dang
thu thuoc » tu thuoc, thu thuc, tru thuoc
khong he » khong khi, hong ha, khong _
sach thu » sach thue, sach thieu, sach tham
khoa pho » khoa phu, khoa khoa, khoa phau
tu cach » tu cac
so sach » so sanh, bo sach, co sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cach thoi chuc dang khong he thong ) or ( so sach thu thuoc thanh khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thoi chuc dang khong he thong ) OR ( so sach thu thuoc thanh khoa pho thong ))*.