Perhaps you should try some spelling variations:
thiet hach » thien hach, thuyet hach, thiet hai
trung tuan » trung thanh, trung tam, truong thanh
soc thiet » hoc thiet, so thiet, toc thieu
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai
cong ban » cong bang, cong san, cong tan

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 hach - thanh ((trung tuan) OR (tran tuan)) dung cong ban thanh lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "soc thiet hach - thanh ((trung tuan) OR (tran tuan)) dung cong ban thanh lap".
• Adding a wildcard symbol may retrieve word variants: soc thiet hach - thanh ((trung tuan) OR (tran tuan)) dung cong ban thanh lap*.