Perhaps you should try some spelling variations:
luat trong » suat trong, thuat trong, luat thuong
thien danh » thien dang, thien thanh, thien chanh
thien anh » tien anh, thien thanh, thien chanh
hanh tang » hanh trang, anh tang, hanh mang
tang luat » tang luan, nang suat, hang luan
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan tai » hang tai, van tai, toan 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 ((thien danh) or (thien anh)) - hanh tang luat trong cong tac nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (thien anh)) - hanh tang luat trong cong tac nhan tai*.