Perhaps you should try some spelling variations:
luan phuong » lan phuong, quang phuong, doan phuong
luan khong » luan phong, luong khong, luan chung
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
hanh dung » thanh dung, anh dung, hanh dong
dinh toan » tinh toan, hinh toan, dinh than
minh toan » tinh toan, manh toan, minh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chua xang - hanh dung ((luan khong) or (luan phuong)) dang ((dinh toan) OR (minh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chua xang - hanh dung ((luan khong) OR (luan phuong)) dang ((dinh toan) OR (minh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chua xang - hanh dung ((luan khong) or (luan phuong)) dang ((dinh toan) OR (minh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: theo chua xang - hanh dung ((luan khong) or (luan phuong)) dang ((dinh toan) OR (minh toan)) ban*.