Perhaps you should try some spelling variations:
thieu hach » thien hach, thieu cac
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu cach » hieu cac, hieu ca, biet cach
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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: hoc ((((thieu hach) OR (hieu cach))) OR (chieu sach)) - canh tranh cua nhung cong san than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thieu hach) OR (hieu cach))) or (chieu sach)) - canh tranh cua nhung cong san than cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu hach) OR (hieu cach))) or (chieu sach)) - canh tranh cua nhung cong san than cau*.