Perhaps you should try some spelling variations:
thien hoat » trien hoat, thien thuat, tien hoa
van thien » van tien, van hien, van chien
xuat dien » xuan dien, xuat hien, thuat dien
van nang » van quang, van ban, van dong
nang xac » nang sach, nang xuan, nang cao
xac xuat » xac suat, san xuat
tin » tinh
luan » quan, lan
hoat » khoat
hoa » khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung luan van thien hoat ) or ( van nang xac xuat dien hoa ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan van thien hoat ) OR ( van nang xac xuat dien hoa ))*.