Perhaps you should try some spelling variations:
nang thuat » nang thuyet, nang suat, nang phat
hien thanh » thien thanh, hien hanh, tien thanh
tinh hang » tinh khang, minh hang, tinh hung
hang luan » tang luan, dung luan
thuat doi » thuat do, thuat di, thuat doc
tin nang » tin dung, ki nang, thi nang
doi hien » doi dien, doi bien, doi kien
de dan » de dang, de dao, ke dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh hang luan van de dan ) or ( tin nang thuat doi hien thanh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh hang luan van de dan ) OR ( tin nang thuat doi hien thanh ))*.