Perhaps you should try some spelling variations:
chua xang » chua nang, chuc nang, chu bang
dang cong » dung cong
cong tinh » cong trinh, cong vinh, long tinh
chu manh » ho manh, chu han, chu van
son luan » von luan, son luon, uon luan
san luan » dan luan, tang luan, hang luan
toan ban » van 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: theo ((chua xang) OR (chu manh)) - anh ((son luan) OR (san luan)) dang cong tinh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu manh)) - anh ((son luan) OR (san luan)) dang cong tinh toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu manh)) - anh ((son luan) OR (san luan)) dang cong tinh toan ban*.