Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
chiet tach » chieu sach
hinh trong » chinh trong, dinh trong, sinh trong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan 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 chiet tach - hinh trong cac truong cong tac toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hinh trong cac truong cong tac toan cau*.