Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
doi chieu » doc hieu, doi chi, ho chieu
cap thang » cau thang, cang thang, van thang
nam thang » nam thanh, nam trong, nam trung
dan thai » dang thai, dan than, ban thai
dan thi » dang thi, tran thi, dinh thi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh trung ((cap thang) or (nam thang)) long ((dan thai) OR (dan thi)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh trung ((cap thang) OR (nam thang)) long ((dan thai) OR (dan thi)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh trung ((cap thang) or (nam thang)) long ((dan thai) OR (dan thi)) cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trung ((cap thang) or (nam thang)) long ((dan thai) OR (dan thi)) cao*.