Perhaps you should try some spelling variations:
tien trinh » tien thinh, bien tinh, tien thanh
tieu tinh » trieu tinh, tieu trinh, lieu tinh
hang cong » dang cong, hang nong, bang cong
trang va » tran van, hang va
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
tang va » tang van, thang va, tang vat

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) or (tien trinh)) - hanh ((tang va) or (trang va)) hang cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu tinh) OR (tien trinh)) - hanh ((tang va) OR (trang va)) hang cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu tinh) or (tien trinh)) - hanh ((tang va) or (trang va)) hang cong san toan cau*.