Perhaps you should try some spelling variations:
thanh tung » thanh cong
quang cong » quang cuong, quang dong, quang hoang
dan quang » dang quang, doan quang, van quang
cong luan » tong luan, cong tuan, dong luan
luan phan » luan van, luan hoan
doc hieu » hoc thieu, hoc hien
tung dan » dung dan, huong dan, trung dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) tinh - thanh tung dan quang cong luan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) tinh - thanh tung dan quang cong luan phan tu.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) tinh - thanh tung dan quang cong luan phan tu*.