Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
tang quan » tang luan, tong quan, thong quan
nang quan » ban quan, nang suat
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: theo tieu tinh - hanh ((tang quan) or (nang quan)) nhung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh ((tang quan) OR (nang quan)) nhung cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh ((tang quan) or (nang quan)) nhung cong san toan cau*.