Perhaps you should try some spelling variations:
thuyet tach » thuyet mach, thuyet hach, thuyet xac
doanh doanh » toan doanh, doanh hoan, doanh thanh
hoc thuyet » hoc chuyen
nhung cong » dung cong, thong cong, hang cong
doanh cua » doanh luan
cua nhung » va nhung
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than cap
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuyet tach - doanh doanh cua nhung cong dan ((than cao) or (((khan cap) or (thanh lap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuyet tach - doanh doanh cua nhung cong dan ((than cao) OR (((khan cap) OR (thanh lap)))).
• Adding a wildcard symbol may retrieve word variants: hoc thuyet tach - doanh doanh cua nhung cong dan ((than cao) or (((khan cap) or (thanh lap))))*.