Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nang thuat » nang thuyet, nang suat, nang phat
toan luan » toan quan, doanh luan, tranh luan
thuat doi » thuat do, thuat di, thuat doc
doi thien » doi hien, doan thien, duoc thien
tin nang » tin dung, ki nang, thi nang
de dan » de dang, de dao, ke dan
tinh » trinh, dinh, minh

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

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