Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet hach » thien hach, thuyet hach, thiet hai
khong cong » thong cong, khong cang, chong cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
thanh bac » nhanh bac, thanh bai, thanh san
cong dan » cong san, cong tan, huong dan
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 hach - thanh trung cua khong cong dan ((phan cau) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet hach - thanh trung cua khong cong dan ((phan cau) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - thanh trung cua khong cong dan ((phan cau) or (thanh bac))*.