Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
doanh quan » doanh quang, doan quan, doanh nhan
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
hoc khien » hoc hien, hoc nghien, hoc thieu
thanh cau » thanh chau, thanh mau, thanh ca
nhanh cau » nhanh cay, thanh chau, nhanh ha
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien tinh - canh ((doanh quan) OR (doanh luan)) nhung cong ban ((thanh cau) or (nhanh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - canh ((doanh quan) OR (doanh luan)) nhung cong ban ((thanh cau) OR (nhanh cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien tinh - canh ((doanh quan) OR (doanh luan)) nhung cong ban ((thanh cau) or (nhanh cau))".
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - canh ((doanh quan) OR (doanh luan)) nhung cong ban ((thanh cau) or (nhanh cau))*.