Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung bong » nhung cong, nhung bang, nhung chong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trang cua » tang cua, trung cua, thang cua
tranh cua » doanh cua, manh cua
bong dan » cong dan, bong da, nong dan
dan toan » van toan, dan than, manh toan
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 ((hieu manh) or (chieu sach)) - hanh ((trang cua) OR (tranh cua)) nhung bong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu sach)) - hanh ((trang cua) OR (tranh cua)) nhung bong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu sach)) - hanh ((trang cua) OR (tranh cua)) nhung bong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu sach)) - hanh ((trang cua) OR (tranh cua)) nhung bong dan toan cao*.