Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
day nhanh » day thanh, duy nhanh, dac nhan
lang tinh » dang tinh, long tinh, bang tinh
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 trung ((day nhanh) or (ca nhan)) lang tinh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trung ((day nhanh) OR (ca nhan)) lang tinh ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trung ((day nhanh) or (ca nhan)) lang tinh ((toan cau) or (toan ban))*.