Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
hieu nganh » vien nganh, hiem ngan, nghiep nganh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, dieu hanh, hien hanh
bang luan » tang luan, hang luan, dung luan
cong sang » cong san, cong lang, cong vang
sang than » cang thang, dang thanh, sang tao
anh bang » anh hoang, anh quang, tinh bang
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu manh) OR (hieu nganh)) - anh bang luan nhung cong sang than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) OR (hieu nganh)) - anh bang luan nhung cong sang than cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) OR (hieu nganh)) - anh bang luan nhung cong sang than cau*.