Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
vap nhung » va nhung, ve nhung, voi nhung
san thanh » ban thanh, van thanh, son thanh
thanh cap » thanh lap, hanh cap, than cap
cong san » cong tac

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) OR (thanh tung)) vap nhung cong san thanh cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - ((thanh trung) OR (thanh tung)) vap nhung cong san thanh cap".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - ((thanh trung) OR (thanh tung)) vap nhung cong san thanh cap*.