Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trinh » canh tranh, hanh chinh
luat dang » luat dan, luat danh, luat doanh
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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 nhanh - hanh trinh luat dang cong dan ((han tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh trinh luat dang cong dan ((han tap) OR (toan tap))*.