Perhaps you should try some spelling variations:
chua xang » chua nang, chuc nang, chu bang
luan dang » luan nang, luan danh, luan dong
dang cong » dung cong
cong vinh » cong trinh, trong vinh, cong viec
vinh toan » tinh toan, hinh toan, minh toan
anh dong » anh huong
toan ban » van ban
chu han » chu van
anh son » tinh son

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) or (chu han)) - ((anh dong) OR (anh son)) luan dang cong vinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu han)) - ((anh dong) OR (anh son)) luan dang cong vinh toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu han)) - ((anh dong) OR (anh son)) luan dang cong vinh toan ban*".