Perhaps you should try some spelling variations:
hien tinh » khien tinh, thien tinh, bien tinh
nhan dang » nhan dan, phan dang, tran dang
dang luat » dan luat, dung luat, tang luat
thong dan » thong van, thong den, trong dan
tuong dan » huong dan, tung dan, xuong dan
hanh tai » thanh tai, hang tai, han tai

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 tinh - nhan dang luat thuong ((thong dan) or (tuong dan)) hanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - nhan dang luat thuong ((thong dan) OR (tuong dan)) hanh tai.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - nhan dang luat thuong ((thong dan) or (tuong dan)) hanh tai*.