Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trang tuan » tran tuan, trong tuan, tran xuan
trung tuan » trung thanh, trung tam, tran tuan
ho chieu » theo chieu, hoc thieu, doi chieu
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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