Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
chuong cong » cuong cong, chong cong, chuong dong
hieu cach » hieu cac, chieu sach, hieu ca
benh phan » benh phau, kenh phan, benh than
tan doanh » toan doanh, van doanh, san doanh
doanh cao » doanh co, doanh bao, doanh cho
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu cach - ((benh nhan) or (benh phan)) thanh chuong cong tan doanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu cach - ((benh nhan) OR (benh phan)) thanh chuong cong tan doanh cao*.