Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thiet tach » chiet tach, thien hach, thuat tach
cua truong » cua trung, xuan truong, cac truong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - canh tranh cua truong cong san ((toan cau) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - canh tranh cua truong cong san ((toan cau) OR (toan cao))*.