Perhaps you should try some spelling variations:
thanh luan » tranh luan, thanh xuan, thanh tuan
van nhuong » van chuong, van phuong, van huong
nhuong chi » thuong chi, nhung chi, chung chi
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
chi dan » choi dan, chi van, thi dan

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 (hoc thieu)) sach - thanh luan van nhuong chi dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh luan van nhuong chi dan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh luan van nhuong chi dan ((toan cau) or (toan tap))*.