Perhaps you should try some spelling variations:
nhanh trinh » hanh trinh, nhanh tinh, thanh trinh
hien sach » dien sach, kien sach, thien hach
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
gian van » giang van, gian dan, gian lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - nhanh trinh cua dung cong dan gian van~.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - nhanh trinh cua dung cong dan gian van*.