Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
thanh va » thanh van, hanh va, thanh ha
trinh va » trinh van, trinh vat, trinh ve
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 - canh ((thanh va) or (trinh va)) nhung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - canh ((thanh va) OR (trinh va)) nhung cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - canh ((thanh va) or (trinh va)) nhung cong san toan cau*.