Perhaps you should try some spelling variations:
tranh trong » tran trong, trinh trong, anh trong
thieu hach » thien hach, chieu sach, hieu cach
trong quan » thong quan, tong quan, thong quang
quan dang » quang dang, quan lang, quan dong
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu hach - tranh trong quan dang cong dan ((luan van) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - tranh trong quan dang cong dan ((luan van) OR (phan lap))*.