Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh quan
dang cong » dung cong
trinh han » trinh quan
chao chu » cho chu, cua chu, cao cho
chu manh » ho manh, chu han, chu van
hanh san » thanh san, khach san, thanh son
hang ban » hang luan, hang va, hang tai
cua dang » cua cong, cua ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu manh - ((hanh san) OR (hang ban)) cua dang cong ((trinh toan) OR (trinh han)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao chu manh - ((hanh san) or (hang ban)) cua dang cong ((trinh toan) OR (trinh han)) cau~".
• Adding a wildcard symbol may retrieve word variants: chao chu manh - ((hanh san) or (hang ban)) cua dang cong ((trinh toan) OR (trinh han)) cau*.