Perhaps you should try some spelling variations:
quang toan » quang tuan, quang tran, quang doan
nhung cong » dung cong, thong cong, hang cong
chuc danh » chuc nganh, thuc hanh, chuc nang
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
vang toan » van toan, dang toan, vang trang
chu manh » ho manh, chu han, chu van
tang cua » mang cua, hang cua, tang luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc danh) or (chu manh)) - hanh tang cua nhung cong ((vang toan) OR (quang toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chu manh)) - hanh tang cua nhung cong ((vang toan) OR (quang toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chu manh)) - hanh tang cua nhung cong ((vang toan) OR (quang toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chu manh)) - hanh tang cua nhung cong ((vang toan) OR (quang toan)) cau*.