Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thiet tach » chiet tach, thien hach, thuat tach
hinh trong » chinh trong, dinh trong, sinh trong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cong sat » cong suat, cong san, cong hat
sat phan » sat nhan, vat phan, xuat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tach - hinh trong cac truong cong sat phan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - hinh trong cac truong cong sat phan cau*.