Perhaps you should try some spelling variations:
thanh hang » thanh hoang, thanh thang, tranh hang
nhung cong » dung cong, thong cong, hang cong
hanh hang » hang hang, hanh han, hanh mang
tai nhung » thai nhung, thi nhung, tai hung
theo chu » theo chieu, cho chu, chao chu
cong tac » cong ty
quan cau » quang cao, toan cau, quan ha

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: ((theo tieu) OR (theo chu)) tinh - ((hanh hang) OR (thanh hang)) tai nhung cong tac quan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (theo chu)) tinh - ((hanh hang) OR (thanh hang)) tai nhung cong tac quan cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (theo chu)) tinh - ((hanh hang) OR (thanh hang)) tai nhung cong tac quan cau*.