Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
trung tuan » trung thanh, tran tuan, truong thanh
soc thiet » hoc thiet, so thiet, toc thieu
dung cong » dung trong
san thanh » ban thanh, van thanh, son thanh
thanh lap » thanh san, phan lap, thanh hai
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: soc thiet tach - thanh ((trung tuan) OR (trung tam)) dung cong san thanh lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "soc thiet tach - thanh ((trung tuan) OR (trung tam)) dung cong san thanh lap".
• Adding a wildcard symbol may retrieve word variants: soc thiet tach - thanh ((trung tuan) OR (trung tam)) dung cong san thanh lap*.