Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chua xang » chua nang, chuc nang, chu bang
cua chua » sua chua, cua chu, cua nhua
tang van » dang van, hoang van, trong van
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
tang va » trang va, 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: cua chua xang - hanh ((tang va) or (tang van)) thuong cong trinh ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cua chua xang - hanh ((tang va) OR (tang van)) thuong cong trinh ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: cua chua xang - hanh ((tang va) or (tang van)) thuong cong trinh ((toan cau) or (toan cao))*.