Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
trong thu » trong nha
cong hung » cong chung, cong huong, cong dung
luan phan » luan van, luan hoan
ho chieu » theo chieu, hoc thieu, mot chieu
hung dan » huong dan, dung dan, tung dan
dan luan » doanh luan, dung luan, tang luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) xanh - thanh trong thu cong hung dan luan phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) xanh - thanh trong thu cong hung dan luan phan*.