Perhaps you should try some spelling variations:
dieu trinh » tieu trinh, dieu tri, diep tinh
dong thanh » truong thanh
quan dung » quang dung, quan duong, qua dung
hoc dieu » hoc thieu, hoc hien
hanh ban » thanh ban, hang ban, hanh san
ban quan » van quan
cong san » cong tac
tran ban » tranh ban, tran van, tran bai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu trinh - hanh ban quan dung ((cong san) or (dong thanh)) ((tran ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu trinh - hanh ban quan dung ((cong san) OR (dong thanh)) ((tran ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc dieu trinh - hanh ban quan dung ((cong san) or (dong thanh)) ((tran ban) or (toan ban))*.