Perhaps you should try some spelling variations:
trien nhan » trien nha, tri nhan, trien khai
hoc trien » hoc tren, hoc tien, hoc truyen
hanh tang » hanh trang, anh tang, hanh mang
cong dung » cuong dung, cong dong, cong luong
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
hanh cat » hanh cac, hanh cham, hanh luat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trien nhan - hanh tang cua cong ((cong dan) or (cong dung)) hanh cat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trien nhan - hanh tang cua cong ((cong dan) OR (cong dung)) hanh cat*.