Perhaps you should try some spelling variations:
sanh nganh » anh ngan, dang nganh, sach ngan
nganh cong » nhanh chong, thanh cong
sanh khanh » van khanh, dinh khanh, anh thanh
danh thanh » dinh thanh, dang thanh, nhanh thanh
cong khi » cong thai, khong khi, co khi
hoa thai » hong thai, hoa phan, hoa chat
so sanh » do sanh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh nganh cong khi đong luc ) OR ( so ((sanh khanh) OR (danh thanh)) hoa thai đong luc ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( so sanh nganh cong khi đong luc ) or ( so ((sanh khanh) OR (danh thanh)) hoa thai đong luc ))~".
• Adding a wildcard symbol may retrieve word variants: (( so sanh nganh cong khi đong luc ) or ( so ((sanh khanh) OR (danh thanh)) hoa thai đong luc ))*.