Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
trang tuan » tran tuan, trung tuan, tran xuan
trong tuan » trong quan, trung tuan, trong tan
thong tan » thong than, thong tran, thong tin
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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