Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung cap, dung cua
cong manh » duong manh, cong thanh, hoang manh
cong danh » cuong danh, cong dan, cong thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trung cua) or (trung tuan)) nhung ((cong manh) OR (cong danh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trung cua) OR (trung tuan)) nhung ((cong manh) OR (cong danh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trung cua) or (trung tuan)) nhung ((cong manh) OR (cong danh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trung cua) or (trung tuan)) nhung ((cong manh) OR (cong danh)) toan tap*.