Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
tranh luan » trinh luat, doanh luan, tang luan
trinh luan » trinh luat, trinh quan, trinh han
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hang cong » dang cong, hang nong, bang cong
thanh cac » hanh cac, thanh bac, thanh ca
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, than cua

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 - canh ((tranh luan) or (trinh luan)) hang cong tan ((than cap) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - canh ((tranh luan) OR (trinh luan)) hang cong tan ((than cap) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - canh ((tranh luan) or (trinh luan)) hang cong tan ((than cap) or (thanh cac))*.