Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
thong cong » trong cong, tong cong, phong chong
tan thanh » tran thanh, tang thanh, toan thanh
thanh mau » hanh mau, thanh san, thanh hai

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) OR (chiet tach)) - hanh trung tuan ((thong cong) or (thong thong)) tan thanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - hanh trung tuan ((thong cong) OR (thong thong)) tan thanh mau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) OR (chiet tach)) - hanh trung tuan ((thong cong) or (thong thong)) tan thanh mau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) OR (chiet tach)) - hanh trung tuan ((thong cong) or (thong thong)) tan thanh mau*.