Perhaps you should try some spelling variations:
trinh cua » tinh cua, trinh luat, trinh quan
tranh cua » doanh cua, manh cua
dung cong » dung trong
30 trieu » 25 trieu
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan tai » toan tap, doanh tai, toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: 30 trieu tinh - hanh ((trinh cua) or (tranh cua)) dung cong van toan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - hanh ((trinh cua) OR (tranh cua)) dung cong van toan tai.
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - hanh ((trinh cua) or (tranh cua)) dung cong van toan tai*.