Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hien hanh » dieu hanh
doanh cua » doanh luan
tuan tap » toan tap, tuan tai, tuyen tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu hach) or (hien hanh)) - canh doanh cua ((nhung cong) OR (thong cong)) anh tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu hach) OR (hien hanh)) - canh doanh cua ((nhung cong) OR (thong cong)) anh tuan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu hach) or (hien hanh)) - canh doanh cua ((nhung cong) OR (thong cong)) anh tuan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu hach) or (hien hanh)) - canh doanh cua ((nhung cong) OR (thong cong)) anh tuan tap*.