Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo lieu » theo tieu, theo chieu, theo yeu
lieu tinh » trieu tinh, diep tinh, bien tinh
trang va » tran van, hang va
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
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 lieu tinh - hanh ((tang va) or (trang va)) thuong cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo lieu tinh - hanh ((tang va) OR (trang va)) thuong cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: theo lieu tinh - hanh ((tang va) or (trang va)) thuong cong san toan ban*.