Perhaps you should try some spelling variations:
nghien tach » nghiep cach, nghiep sach, nghiem sach
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
hoc nghien » hoc hien
cua thuong » cua truong, cua phuong, ca thuong
trung cua » truong cua, trung tuan, trung cap
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 nghien tach - thanh trung cua thuong cong dan toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc nghien tach - thanh trung cua thuong cong dan toan cao*.