Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
truong tai » truong dai, truong thi, truong cao
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
hoi hieu » hoi phieu, hoi tieu, moi hieu
tai dang » tai lang, dai dang, hai dang
cong san » cong tac
toan cau » 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: hoi hieu lang - thanh truong tai dang cong san ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - thanh truong tai dang cong san ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - thanh truong tai dang cong san ((toan cau) or (van ban))*.