Perhaps you should try some spelling variations:
thiet hach » thien hach, thuyet hach, thiet hai
doanh doan » doanh doanh, doanh hoan, doanh nhan
bang thanh » ban thanh, dang thanh, tang thanh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
dung cong » dung trong
cong bang » cuong bang, dong bang, hong bang
thanh cha » thanh ha, thanh nha, thanh phan
va dung » van dung, va duong, vat dung

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 hach - doanh doan va dung cong bang thanh cha~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - doanh doan va dung cong bang thanh cha*.