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
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
cong manh » cong danh, duong manh, cong thanh
toan cao » toan ban
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) or (chiet tach)) - hanh trung tuan hang cong manh ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - hanh trung tuan hang cong manh ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (chiet tach)) - hanh trung tuan hang cong manh ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chiet tach)) - hanh trung tuan hang cong manh ((toan cao) OR (toan tap))*.