Perhaps you should try some spelling variations:
toan thiet » hoan thien, luan thiet, toan tien
thiet hang » thieu khang, thi hang, thiet hai
hieu lang » chieu sang, hieu quang, nhieu tang
manh toan » thanh toan, anh tuan, tinh toan
hang cong » dang cong, hang nong, bang cong
cua sinh » hoa sinh, va sinh
cong san » cong tac
toan tap » toan ban
toan cao » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (cua sinh)) - manh toan thiet hang cong san ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (cua sinh)) - manh toan thiet hang cong san ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (cua sinh)) - manh toan thiet hang cong san ((toan tap) or (toan cao))*.