Perhaps you should try some spelling variations:
than thanh » thanh thanh, thuan thanh, thang thanh
cong duong » cuong duong, cong dong, con duong
thi chieu » thi chien, thi hieu, theo chieu
tinh than » tinh thanh, tinh toan, tinh thai
duong dan » duong dang, huong dan, duong van
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (theo tieu)) sach - tinh than thanh cong duong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo tieu)) sach - tinh than thanh cong duong dan phan tu.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo tieu)) sach - tinh than thanh cong duong dan phan tu*.