Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
doi chieu » doc hieu, doi chi, mot chieu
tuong qua » tuong quan, duong qua, thong qua
ho chieu » theo chieu, hoc thieu, mot chieu
qua dung » quang dung, su dung, qua song
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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