Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trong ban » trong san, trong tan, trong quan
cap dung » cao dung, chan dung, cach dung
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap
ap dung » xay dung, van dung

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 chiet tach - thanh trung ((cap dung) OR (ap dung)) trong ban toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - thanh trung ((cap dung) OR (ap dung)) trong ban toan cau*.