Perhaps you should try some spelling variations:
trinh thanh » tinh thanh, trinh han, trinh toan
thong luan » thong quan, thong xuan, thong quang
chung cong » nhung cong, chong cong, phung cong
doi chieu » doc hieu, doi chi, mot chieu
tong luan » tang luan, dung luan, hang luan
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, mot chieu

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 (doi chieu)) sach - thanh ((thong luan) OR (tong luan)) chung cong trinh thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - thanh ((thong luan) OR (tong luan)) chung cong trinh thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) sach - thanh ((thong luan) OR (tong luan)) chung cong trinh thanh cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sach - thanh ((thong luan) OR (tong luan)) chung cong trinh thanh cau*.