Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet tach » chiet tach, thien hach, thuat tach
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, khoan cam
phan dau » phan tu, hang dau
chat » nhat, phat

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

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