Perhaps you should try some spelling variations:
trinh cong » trinh dung
hanh tang » hanh trang, anh tang, hanh mang
qua trinh » qua kinh
chu xanh » chieu xanh, chua xang, chuc danh
chu manh » ho manh, chu han, chu van
tang qua » tang quan, tang cua, tang quy
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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 xanh) OR (chu manh)) - hanh tang qua trinh cong tan van ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) OR (chu manh)) - hanh tang qua trinh cong tan van ban*.