Perhaps you should try some spelling variations:
quan hoang » luan hoan
chua xang » chua nang, chuc nang, chu bang
quan hang » quan lang, quan hanh, qua hang
chu xanh » chu manh, chieu xanh, chuc danh
cong tac » cong ty
tac tuan » tac quan, ta tuan, tai tuan
tuan cau » toan cau, quan cau, tuan cu

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 ((chu xanh) OR (chua xang)) - canh tranh ((quan hang) OR (quan hoang)) cong tac tuan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chua xang)) - canh tranh ((quan hang) OR (quan hoang)) cong tac tuan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chua xang)) - canh tranh ((quan hang) OR (quan hoang)) cong tac tuan cau*.