Perhaps you should try some spelling variations:
trung thuat » thuong thuat, trung tuan, trung thuc
trong thuat » trong hoat, trong thu, trong phat
thiet tach » chiet tach, thien hach, thuat tach
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van 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 - thanh ((trung thuat) or (trong thuat)) nhung cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - thanh ((trung thuat) OR (trong thuat)) nhung cong dan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - thanh ((trung thuat) or (trong thuat)) nhung cong dan phan cau*.