Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thien hach » thien thanh, hien hanh
thanh dong » thanh duong, hanh dong, nhanh dong
nghe thong » he thong
thong danh » thong dan, thong lanh, trong danh
danh than » danh thanh, danh thang, danh nhan
hoc nghe » hoc nghien, khoe nghe, hoc he
than cau » toan cau, phan cau, than cap

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 (thien hach)) - ((thanh dong) OR (thanh cong)) hoc nghe thong danh than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (thien hach)) - ((thanh dong) OR (thanh cong)) hoc nghe thong danh than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (thien hach)) - ((thanh dong) OR (thanh cong)) hoc nghe thong danh than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (thien hach)) - ((thanh dong) OR (thanh cong)) hoc nghe thong danh than cau*.