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 tinh » cua sinh, va tinh, ha tinh
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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 tinh)) - manh toan thiet hang cong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (cua tinh)) - manh toan thiet hang cong dan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (cua tinh)) - manh toan thiet hang cong dan ((toan cau) or (toan cao))*.