Perhaps you should try some spelling variations:
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
chu sang » thu sang, chieu sang, chuc nang
chu bang » thu bang, chuc nang, chu quang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
mang va » mang vua, hang va, bang va
va dung » van dung, va duong, vat dung

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sang) OR (chu bang)) - hanh mang va dung cong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sang) OR (chu bang)) - hanh mang va dung cong dan toan cao*.