Perhaps you should try some spelling variations:
thinh khong » tinh khong, trinh khong, thi khong
thanh khong » thanh hong, thanh chuong, thanh phuong
nganh cong » nhanh chong, thanh cong
cua nganh » cua ngan, chuc nganh, cua nhan
cong khi » cong thai, khong khi, co khi
thu cua » thuc cua, hu cua, tu cua
su danh » sau danh, su doanh, su dang

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: (( thu cua nganh cong khi đong luc ) OR ( su danh ((thanh khong) OR (thinh khong)) khi đong luc ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thu cua nganh cong khi đong luc ) or ( su danh ((thanh khong) OR (thinh khong)) khi đong luc ))~".
• Adding a wildcard symbol may retrieve word variants: (( thu cua nganh cong khi đong luc ) or ( su danh ((thanh khong) OR (thinh khong)) khi đong luc ))*.